Julian Grobelny (16 February 1893 – 5 December 1944[1]) was an activist in the Polish Socialist Party (PPS) from 1915, in the lead-up to Poland's return to independence.

[3] Despite suffering from tuberculosis, Grobelny – together with his wife Halina (born 1900) – was personally involved in the rescue of a large number of Polish Jews during the German occupation of Poland.

[3][4] They harbored over a dozen Jewish PPS activists in their home, and worked in close co-operation with Irena Sendler, head of the children’s section of Żegota.

Julian (pseudonym "Trojan") and Halina turned their modest house in Cegłów near Mińsk Mazowiecki into a temporary shelter for Jews until they could be moved into a more permanent place.

The Grobelnys devoted most of their time and energy to rescue work, but also helped Jewish adults by supplying them with “Aryan” papers, money and medicines.