• 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

st Sigismund
Roman Catholic parish
05-507 Słomczyn
85 Wiślana str.
Konstancin deanery
Warsaw archdiocese

  • 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

LINK to Nu HTML Checker

Martyrology of the clergy — Poland

XX century (1914 – 1989)

personal data

review in:

  • SEWIŁŁO Stanislaus, source: www.meczennicy.pelplin.pl, own collection; CLICK TO ZOOM AND DISPLAY INFOSEWIŁŁO Stanislaus
    source: www.meczennicy.pelplin.pl
    own collection

religious status

Servant of God




Stanislaus (pl. Stanisław)

  • SEWIŁŁO Stanislaus - Commemorative plaque, Jesuits church, Cracow, Kopernika str., source: www.sowiniec.com.pl, own collection; CLICK TO ZOOM AND DISPLAY INFOSEWIŁŁO Stanislaus
    Commemorative plaque, Jesuits church, Cracow, Kopernika str.
    source: www.sowiniec.com.pl
    own collection
  • SEWIŁŁO Stanislaus - Commemorative plaque, Finucaine Center, Rockhurst Jesuit University, Kansas City, source: college.holycross.edu, own collection; CLICK TO ZOOM AND DISPLAY INFOSEWIŁŁO Stanislaus
    Commemorative plaque, Finucaine Center, Rockhurst Jesuit University, Kansas City
    source: college.holycross.edu
    own collection
  • SEWIŁŁO Stanislaus - Commemorative plaque, Holy Ghost church, Nowy Sącz, source: www.miejscapamiecinarodowej.pl, own collection; CLICK TO ZOOM AND DISPLAY INFOSEWIŁŁO Stanislaus
    Commemorative plaque, Holy Ghost church, Nowy Sącz
    source: www.miejscapamiecinarodowej.pl
    own collection


religious seminarian


Latin (Roman Catholic) Church
more on: en.wikipedia.org [access: 2014.09.21]


Society of Jesus (Jesuits - SI)
more on: en.wikipedia.org [access: 2014.09.21]

diocese / province

Southern Poland province SI

date and place of death


KL Dachau
Dachau, Upper Bavaria reg., Bavaria, Germany

alt. dates and places of death


details of death

After German and Russian invasion of Poland in 09.1939 and start of the II World War, after start of German occupation, arrested by the Germans on 10.11.1939 in Cracow, together with 24 Jesuits from Cracow Jesuits’ College (with Fr Joseph Cyrek, Fr Casimir Dembowski, Fr Marian Morawski, Fr Stanislaus Podoleński, Bro John Zając, Bro Eugene Żeleźniak, student Bronislaus Wielgosz, among others), by the Germans. Jailed in Montelupich prison in Cracow and next on 03.02.1940 in Wiśnicz n. Cracow concentration camp. Next on 20.06.1940 transported to Auschwitz concentration camp and from there on 12.12.1940 to Dachau concentration camp where he was murdered — undergone criminal medical „experiments” (kept in ice‑cold water, tuberculosis, etc.).

cause of death

extermination: medical experiments



date and place of birth


Myślenice pow., Lesser Poland voiv., Poland

alt. dates and places of birth


positions held

friar at Cracow monastery — scholastic, philosophy student in Cracow, novitiate in Pinsk and Stara Wieś, in Congregation in Stara Wieś monastery from 30.07.1935

others related in death

CYREK Joseph, DEMBOWSKI Casimir Marian Anthony, MORAWSKI Marian Joseph Adalbert, PODOLEŃSKI Stanislaus Thaddeus, WIELGOSZ Bronislaus, ZAJĄC John, ŻELEŹNIAK Eugene, ANDRZEJCZAK Stanislaus Kostka, BUKOWY Stanislaus, DACHTERA Francis, FELCZAK Stanislaus, GLISZCZYŃSKI Francis, JANECKI Mieczyslav, KAŁUŻA Joseph, KŁOCZKOWSKI Mieczyslav John, KOCOT Joseph Francis, KOŁODZIEJ Stanislaus, KONOPIŃSKI Marian Vaclav, KULASIŃSKI Leo, LEŚNIEWICZ Louis, LIGUDA Paul Louis, LIS Thomas, ŁAGODA Leo, NOWICKI Casimir, PAJDO Francis, RYGUS Leo, SEJBUK Czeslav, STABRAWA Joseph, STACHOWSKI Bruno, STOPCZAK Marian, TRZASKOMA John, ZUSKE Stanislaus Witold

murder sites
camps (+ prisoner no)

Medical experiments: Criminal medical experiments conducted by German specialists on concentration camp inmates. Among tests, in KL Dachau, KL Auschwitz, KL Buchenwald and other camps, performed by German murderers were malaria injections, liver tests, injections of tuberculosis, typhoid, phlegmon germs, flying tests (in pressure chambers), blood crystallization and coagulation tests, hypothermia, sterilization, starvation tests, etc. (more on: pl.wikipedia.org [access: 2012.11.23], en.wikipedia.org [access: 2013.12.04])

KL Dachau (prisoner no: 22250): KL Dachau in German Bavaria, set up in 1933, became the main concentration camp for Catholic priests and religious during II World War: Germans imprisoned there approx. 3,000 priests, including 1,800 Poles. They were forced to slave at so‑called „Plantags”, doing manual field works, at constructions, including crematorium. In the barracks ruled hunger, freezing cold in the winter and suffocating heat during the summer. Prisoners suffered from bouts of illnesses, including tuberculosis. Many were victims of murderous „medical experiments” — in 11.1942 c. 20 were given phlegmon injections; in 07.1942 to 05.1944 c. 120 were used by for malaria experiments. More than 750 Polish clerics where murdered by the Germans, some brought to Schloss Hartheim euthanasia centre and murdered in gas chambers. At its peak KL Dachau concentration camps’ system had nearly 100 slave labour sub–camps located throughout southern Germany and Austria. There were c. 32,000 documented deaths at the camp, and thousands perished without a trace. C. 10,000 of the 30,000 inmates were found sick at the time of liberation, on 29.04.1945, by the USA troops… (more on: www.kz-gedenkstaette-dachau.de [access: 2013.08.10], en.wikipedia.org [access: 2016.05.30])

KL Auschwitz (prisoner no: 933): German KL Auschwitz concentration camp (Germ. Konzentrationslager) and death camp (Germ. Vernichtungslager) camp was set up by Germans around 27.01.1940 n. Oświęcim, on the German territory (initially in Germ. Provinz Schlesien — Silesia Province; and from 1941 Germ. Provinz Oberschlesien — Upper Silesia Province). Initially mainly Poles were interned. From 1942 it became the centre for holocaust of European Jews. Part of the KL Auschwitz concentration camps’ complex was death camp (Germ. Vernichtungslager) KL Auschwitz II Birkenau, located not far away from the main camp. There Germans murder possibly in excess of million people, mainly Jews, in gas chambers. Altogether In excess of 400 priests and religious went through the KL Auschwitz, approx. 40% of which were murdered (mainly Poles). (more on: en.auschwitz.org.pl [access: 2012.11.23], www.meczennicy.pelplin.pl [access: 2013.07.06])

Wiśnicz: Penal institution set up — by Joseph II, Austrian emperor, after 1st partition of Poland — in a former Discalded Carmelites’ convent in Nowy Wiśnicz n. Bochnia. During the II World War Germans initially used it as a concentration camp for Poles prior to opening up the KL Auschwitz concentration camp. Many Poles suspected by the Germans of collaboration with Polish Clandestine State, prior to being sent to concentration camps, especially KL Auschwitz, were held there. During the night of 26‑27.07.1944 resistance Home Army AK attacked the prison and freed 129 Polish „political” prisoners. (more on: pl.wikipedia.org [access: 2013.08.10])

Cracow (Montelupich): Cracow penal prison, during occupation run by the Germans — from 28.02.1941 by Germ. Geheime Staatspolizei (Eng. Secret State Police, known as Gestapo. In 1940‑4 Germans jailed there approx. 50,000 prisoners, mainly Poles and Jews. Some of them were transported to KL Auschwitz concentration camp, some were executed. After cease in war effort the prison was used by UB — a Polish unit of Russian NKVD — as a prison for Polish independence resistance fighters, some of which were subsequently sent to prisons and slave labour camps in Russia. (more on: en.wikipedia.org [access: 2014.10.31])

Sonderaktion Krakau: German operation against Cracow intelligentsia, part of a broader „Intelligenzaktion” against Polish intelligentsia, carried out in 1939‑40. On 06.11.1939 Germans arrested 183/4 Cracow professors from prestigiuous universities, mainly Jagiellonian University. They were jailed in Montelupich prison in Cracow prior to being sent to KL Sachsenhausen concentration camp. 4 days later on 10.11.1939 Germans arrested 25 Jesuits from Cracow College. They were also jailed in Montelupich prison and then transported to German concentration camps where 7 of them perished. (more on: en.wikipedia.org [access: 2015.03.01])

Intelligenzaktion: (Eng. „Action Intelligentsia”) — extermination program of Polish elites, mainly intelligentsia, executed by the Germans right from the start of the occupation in 09.1939 till around 05.1940, mainly on the lands directly incorporated into Germany but also in the so‑called General Governorate where it was called AB‑aktion. During the first phase right after start of German occupation of Poland implemented as Germ. Unternehmen „Tannenberg” (Eng. „Tannenberg operation”) — plan based on proscription lists of Poles worked out by (Germ. Sonderfahndungsbuch Polen), regarded by Germans as specially dangerous to the German Reich. List contained names of c. 61,000 Poles. Altogether during this genocide Germans methodically murdered c. 50,000 teachers, priests, landowners, social and political activists and retired military. Further 50,000 were sent to concentration camps where most of them perished. (more on: en.wikipedia.org [access: 2015.03.01], en.wikipedia.org [access: 2014.10.04])

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. „The 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.org [access: 2015.09.30])


pl.wikipedia.org [access: 2012.11.23], www.jezuici.pl [access: 2012.11.23], arolsen-archives.org [access: 2019.10.13], www.ipgs.us [access: 2012.11.23], archive.today [access: 2021.05.06]
„Jesuits on Polish and Lithuanian territory knowledge encyclopedia, 1564‑1995”, Fr Louis Grzebień SI (editor), WAM Printing House, Cracow 1996
Mr Andrew Filipek, private correspondence, 09.09.2018 and 09.10.2018
original images:
www.meczennicy.pelplin.pl [access: 2015.03.01], www.sowiniec.com.pl [access: 2016.03.14], college.holycross.edu [access: 2013.05.19], www.miejscapamiecinarodowej.pl [access: 2014.05.09]


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