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Son of Jan "John" Gierszewski, Sr. and Józefa "Josephine" Gierszewska Brother of Marcin 'Martin" Gierszewski; Marianna Stroik (Stojk); Julianna Anna Gierszewska; Jan Gierszewski, Jr.; Anna Gierszewska and 3 others; Augustyn "August" Gierszewski; Franciszek Gierszewski and Paweł Gierszewski « less