Marceli Porowski was born on 4 February 1894, in Wola Bystrzycka, Congress Poland, Russian Empire.

[1][2] From May 1919 to 1929, he worked in the Department of the Local Government of the Ministry of Interior in Warsaw, where among other functions, he was the head of the Municipal Finance Division.

[5] On 16 September 1939, during the Siege of Warsaw laid by the German forces, Porowski was appointed by Stefan Starzyński, the Civil Commissioner of the Warsaw Defence Command, to be the representative of the District Commissioner Office of Praga-South.

[1] Following the end of the Second World War, Porowski returned to working in the state administration.

[7] On 8 December 1951, Porowski was arrested for his activity during the war, and on 10 February 1953, he received the death sentence.

[9][10] On 2 August 2010, Jadwiga Porowska, Marceli Porowski's daughter-in-law, handed over his documents to Ryszard Wojtkowski, the director of the Warsaw National Archives.

[1] On 10 November 2010, Porowski was posthumously awarded the Commander's Cross of the Order of Polonia Restituta.

[12] On 16 November 2011, on the façade of the Jabłonowski Palace, former city hall of Warsaw, was placed the commemorative plaque dedicated to Marceli Porowski.