His real name was Mikołaj Dolanowski, but he used pseudonym Jerzy Hryniewski as member of the secret Polska Organizacja Wojskowa before reinstating of Independence.
Gerçek adı Mikołaj Dolanowski'ydı, ancak Bağımsızlıktan önce Jerzy Hryniewski'yi gizli Polska Organizacja Wojskowa üyesi olarak kullandı.