 He was born into nobility, specifically the Clan of Ostoja.His father was Jan Zagórski, one of many representatives of the noble Zagórski family living throughout Masovia, Warsaw, Lubelszczyzna, Lublin, and Cracow.Jan Zagórski was an active member of the January Uprising in 1863-1864, who as a result of his participation in the Uprising, was deported to Siberia only to escape and flee afterwards to France.