• OUR LADY of CZĘSTOCHOWA: st Sigismund parish church, Słomczyn, Poland; source: own collectionOUR LADY of CZĘSTOCHOWA
    St Sigismund parish church, Słomczyn, Poland
    source: own collection

Roman Catholic
St Sigismund parish
05-507 Słomczyn
85 Wiślana Str.
Konstancin deanery
Warsaw archdiocese, Poland

  • St SIGISMUND: St Sigismund parish church, Słomczyn, Poland; source: own collectionSt SIGISMUND
    St Sigismund parish church, Słomczyn, Poland
    source: own collection
  • St SIGISMUND: XIX c., feretory, St Sigismund parish church, Słomczyn, Poland; source: own collectionSt SIGISMUND
    XIX c., feretory
    St Sigismund parish church, Słomczyn, Poland
    source: own collection
  • St SIGISMUND: XIX c., feretory, St Sigismund parish church, Słomczyn, Poland; source: own collectionSt SIGISMUND
    XIX c., feretory
    St Sigismund parish church, Słomczyn, Poland
    source: own collection
  • St SIGISMUND: XIX c., feretory, St Sigismund parish church, Słomczyn, Poland; source: own collectionSt SIGISMUND
    XIX c., feretory
    St Sigismund parish church, Słomczyn, Poland
    source: own collection
  • St SIGISMUND: XIX c., feretory, St Sigismund parish church, Słomczyn, Poland; source: own collectionSt SIGISMUND
    XIX c., feretory
    St Sigismund parish church, Słomczyn, Poland
    source: own collection
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Martyrology of the clergy — Poland

XX century (1914 – 1989)

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Leo (pl. Leon)




Latin (Roman Catholic) Churchmore on
[access: 2014.09.21]


Society of Christ Fathers for Poles Living Abroad (Christ Fathers - SChr)more on
[access: 2013.05.19]

date and place of death


KL Natzweiler-Struthofconcentration camp
today: n. Natzwiller, Bas–Rhin dep., Grand Est reg., France

more on
[access: 2022.01.09]

alt. dates and places of death


details of death

After German invasion of Poland on 01.09.1939 (Russians invaded Poland 17 days later) and start of the II World left together with co‑friars and novitiate Potulice Congregation's motherhouse — where Germans set up later UWZ Lager Lebrechtsdorf resettlement camp. Moved to German–run General Governorate and settled in Warsaw in a Salesians of Don Bosco Fr Siemiec Orphans' House, together with a group of co‑religious.

Worked as a nurse in Malta Hospital in Warsaw.

To survive traded devotional articles around Warsaw travelling frequently.

Forced to move to Schweinfurt in Bavaria where force slave at local hospital.

After 1,5 years allowed to visit Warsaw for holidays and did not return.

Arrested by the Germans on 07.02.1944 together with a group of priests and religious at Fr Siemiec Orphans' House in Warsaw.

Taken to Pawiak prison and from there prob. on 28.03.1944 to KL Groß‑Rosen concentration camp where he slaved in quarries.

After camp's evacuation on 07.02.1945 registered as prisoner of a „virtual” KL Natzweiler concentration camp.

Prob. perished in one of its sub–camps, functioning under KL Natzweiler name, in unknown location.

alt. details of death

According to other sources arrested by the Germans after Warsaw Uprising outbreak on 01.08.1944.

Interned in Durchgangslager 121 Pruszków transit camp and next moved to Germans concentration camps.

Liberated by the Americans but perished soon after in a one of KL Natzweiler concentration sub–camp.

cause of death




date and place of birth


Ludwinówtoday: Żerków gm., Jarocin pow., Greater Poland voiv., Poland
more on
[access: 2021.12.18]

religious vows

29.09.1938 (last)

positions held

friar at Fr Siemiec Orphans' House in Warsaw (c. 1939/40‑1944), f. friar at Congregation's motherhouse in Potulice (1936‑9) — distributor of religious press, novitiate in Potulice Congregation's motherhouse (from 28.09.1936), in Congregation in its motherhouse in Potulice from 27.03.1936

others related in death

BYRECKIClick to display biography Simon, DUNAKClick to display biography Boleslaus, KRUPIŃSKIClick to display biography Louis, KOWALCZYKClick to display biography Vladislav

murder sites
camps (+ prisoner no)

KL Natzweiler: German KL Natzweiler–Struthof concentration camp n. Natzweiler in French Vosges Mountains, in operation from 21.05.1941. Liberated by the Allies on 25.11.1944. The total number of prisoners, from many countries, reached an c. 52,000 over the three years. C. 4,500 perished. At liberation the camp was empty — prisoners were moved earlier do satellite camps on the other side of Rhine river, into Germany proper. Keeping the name of KL Natzweiler the camp’s administration was moved to KL Dachau, then to Guttenbach and Binau. More then 20 new camps with KL Natzweiler name (such as Mannheim–Sandhofen, Kochendorf) were set up, and in the period from 09.1944 to 01.1945 19,833 new prisoners were registered. They were forced to slave for German companies, such as Daimler, Krupp or Mauser, many times in underground bunkers or caves. In 04.1945 in the face of fast approaching Allies prisoners were constantly on the move, from camp to camp, forced to run in „death marches”… (more on: en.wikipedia.orgClick to attempt to display webpage
[access: 2015.05.09]

KL Groß-Rosen: Groß‑Rosen (today: Rogoźnica) was a German concentration camp founded in the summer of 1940 (first transport of prisoners arrived on 02.08.1940). Initially a branch of KL Sachsenhausen concentration camp. In 1944 became a centre of a network of more than 100 camps. Prisoners were forced to slave at nearby granite quarries, on starvation rations. More than 125,000 prisoners were enslaved — 40,000 victims perished. In 1945 — in „death marches” — Germans dragged through the camp thousands of prisoners from the camp’s in east being one by one overrun by the Russians. The camp itself was captured by the Russians on 14.02.1945. (more on: en.wikipedia.orgClick to attempt to display webpage
[access: 2019.02.02]

DL 121 Pruszków: Durchgangslager 121 Pruszków (Eng. transit camp) – transit camp where Germans herded Warsaw (and its vicinity) civilian population captured during and after Warsaw Uprising. Set up on 06.01.1944 functioned till 12.1944. C. 390,000–410,000 people were held captive. Most of them were sent subsequently to concentration camps and forced slave labour in Germany. Few hundred – few thousands of them perished in the camp. (more on: pl.wikipedia.orgClick to attempt to display webpage
[access: 2015.03.01]

Warsaw Uprising: Lasted from 01.08.1944 till 03.10.1944. Was an attempt to liberate Polish capital from occupying Germans by the Polish Clandestine State — a unique in the history of the world political structure on the territories occupied by the Germans, effectively governing clandestinely in Poland — and by fighting on its behalf underground military units, mainly of Home Army (former Armed Struggle Association ZWZ) and National Armed Forced (NSZ). At the same time Russians stopped on purpose the offensive on all front, halted on the other bank of Vistula river and watched calmly the annihilation of the city, refusing even the mid–landing rights to the Allied planes carrying weapons and supplies to the insurgents from Italy. During the Uprising Germans murdered approx. 200,000 Poles, mainly civilians. Approx. 200 priests and nuns died in fighting or were murdered by the Germans, many in mass executions. (more on: en.wikipedia.orgClick to attempt to display webpage
[access: 2013.08.17]

Pawiak: Investigative prison in Warsaw, built by the Russian occupiers of Poland in 1830‑5. During the Poland partition's period, a Russian investigative prison, both criminal and political. During World War II and the German occupation, the largest German prison in the General Government. Initially, it was subordinate to the Justice Department of the General Governorate, and from 03.1940 Germ. Sicherheitspolizei und des Sicherheitsdienst (Eng. Security Police and Security Service) of the Warsaw District — in particular the German Secret Political Police Gestapo. c. 3,000 prisoners were kept in Pawiak permanently, of which about 2,200 in the men's unit and c. 800 in the women's unit (the so‑called Serbia) — with a „capacity” of c. 1,000 prisoners. In total, in the years 1939–1944, c. 100,000 Poles passed through the prison, of which c. 37,000 were murdered in executions — from 10.1943 Pawiak prisoners were murdered in open executions on the streets of Warsaw (sometimes several times a day) — during interrogations, in cells or in a prison „hospital”, and c. 60,000 were taken in 95 transports to concentration camps (mainly KL Auischwitz), other places of isolation or to forced labor. The prison Germans demolished during the Warsaw Uprising in 08‑10.1944. (more on: en.wikipedia.orgClick to attempt to display webpage
[access: 2022.08.17]

07.02.1944 arrests: In apparent in retaliation for the successful attempt on the head of the Warsaw Gestapo and the SS gen. Kutschera (01.02.1944) German political police (Gestapo) arrested many priests and religious in Warsaw, Cracow, Lublin and Radom, including 17 priests, 14 religious and many pupils and staff members of the Fr Siemiec orphans' house run by Salesian Fathers in Warsaw and 14 Vincentian (Lazarists) priests, 5 Vincentian religious and 3 lay people ministering in the Holy Cross church in Warsaw. They were taken to infamous Pawiak prison in Warsaw and next some of them were transported to Groß‑Rosen concentration camp.

Slave labour in Germany: During II World War Germans forced c. 15 million people to do a slave forced labour in Germany and in the territories occupied by Germany. In General Governorate the obligation to work included Poles from 14 to 60 years old. On the Polish territories occupied and incorporated into Germany proper obligation was forced upon children as young as 12 years old — for instance in Warthegau (Eng. Greater Poland). (more on: en.wikipedia.orgClick to attempt to display webpage
[access: 2017.11.07]

General Governorate: A separate administrative territorial region set up by the Germans in 1939 after defeat of Poland, which included German‑occupied part of Polish territory that was not directly incorporate into German state. Created as the result of the Molotov–Ribbentrop Pact, in a political sense, was to recreate the German idea of 1915 (after the defeat of the Russians in the Battle of Gorlice in 05.1915 during World War I) of establishing a Polish enclave within Germany (also called the General Governorate at that time). It was run by the Germans till 1945 and final Russian offensive, and was a part of so–called Big Germany — Grossdeutschland. Till 31.07.1940 formally known as Germ. Generalgouvernement für die besetzten polnischen Gebiete (Eng. General Governorate for occupied Polish territories) — later as simply niem. Generalgouvernement (Eng. General Governorate). From 07.1941 expanded to include district Galicia. (more on: en.wikipedia.orgClick to attempt to display webpage
[access: 2013.12.04]

Lebrechtsdorf (Potulice): In the autumn of 1939 after invasion of Poland Germans — i.e. „East” branch of Treuhandanstalt, Main Trust Office — took over the Society of Christ Fathers for Poles Living Abroad Congregation’s house in Potulice, following eviction of all remaining friars. Initially the estate was given to SS unit and SS non–commissioned officer's school was set up. In 1940 the estate was taken over by Resettlement Headquarters in Gdańsk and used as a transit camp for Poles prior to deportation to General Governorate. In 1941 the camp was made a sub‑camp of KL Stutthof concentration camp. From 01.02.1942 it was made an independent UWZ Lager Lebrechtsdorf resettlement camp for Poles. Till 1945 more than 1,297 Poles perished there, most of them children. After German defeat and end of II World War hostilities the Commie–Nazi authorities set up there Central Labour Camp for Germans. From overall population of c. 34,932 German prisoners c. 4,495 perished, including many children and elderly. From 1950 the buildings were used a prison for Polish political prisoners. (more on: en.wikipedia.orgClick to attempt to display webpage
[access: 2018.10.04]

Ribbentrop-Molotov: Genocidal Russian–German alliance pact between Russian leader Joseph Stalin and German leader Adolf Hitler signed on 23.08.1939 in Moscow by respective foreign ministers, Mr. Vyacheslav Molotov for Russia and Joachim von Ribbentrop for Germany. The pact sanctioned and was the direct cause of joint Russian and German invasion of Poland and the outbreak of the II World War in 09.1939. In a political sense, the pact was an attempt to restore the status quo ante before 1914, with one exception, namely the „commercial” exchange of the so–called „Kingdom of Poland”, which in 1914 was part of the Russian Empire, fore Eastern Galicia (today's western Ukraine), in 1914 belonging to the Austro–Hungarian Empire. Galicia, including Lviv, was to be taken over by the Russians, the „Kingdom of Poland” — under the name of the General Governorate — Germany. The resultant „war was one of the greatest calamities and dramas of humanity in history, for two atheistic and anti–Christian ideologies — national and international socialism — rejected God and His fifth Decalogue commandment: Thou shall not kill!” (Abp Stanislaus Gądecki, 01.09.2019). The decisions taken — backed up by the betrayal of the formal allies of Poland, France and Germany, which on 12.09.1939, at a joint conference in Abbeville, decided not to provide aid to attacked Poland and not to take military action against Germany (a clear breach of treaty obligations with Poland) — were on 28.09.1939 slightly altered and made more precise when a treaty on „German–Russian boundaries and friendship” was agreed by the same murderous signatories. One of its findings was establishment of spheres of influence in Central and Eastern Europe and in consequence IV partition of Poland. In one of its secret annexes agreed, that: „the Signatories will not tolerate on its respective territories any Polish propaganda that affects the territory of the other Side. On their respective territories they will suppress all such propaganda and inform each other of the measures taken to accomplish it”. The agreements resulted in a series of meeting between two genocidal organization representing both sides — German Gestapo and Russian NKVD when coordination of efforts to exterminate Polish intelligentsia and Polish leading classes (in Germany called Intelligenzaktion, in Russia took the form of Katyń massacres) where discussed. Resulted in deaths of hundreds of thousands of Polish intelligentsia, including thousands of priests presented here, and tens of millions of ordinary people,. The results of this Russian–German pact lasted till 1989 and are still in evidence even today. (more on: en.wikipedia.orgClick to attempt to display webpage
[access: 2015.09.30]


www3.tchr.orgClick to attempt to display webpage
[access: 2018.10.04]
, www.straty.plClick to attempt to display webpage
[access: 2016.03.14]

bibliograhical:, „Martyrology of the Polish Roman Catholic clergy under nazi occupation in 1939‑1945”, Victor Jacewicz, John Woś, vol. I‑V, Warsaw Theological Academy, 1977‑1981, „A martyrology of Polish clergy under German occupation, 1939‑45”, Fr Szołdrski Vladislaus CSSR, Rome 1965


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