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Son of Paweł "Paul" Firkus and Anna Firkus Brother of Piotr "Peter" Paweł Firkus; August Piotr Firkus; Joseph Firkus; Michael Firkus; Anna Katzmarek and 3 others; Magdellen King; Anton Firkus and Alois Firkus « less Half brother of Corp. Jan "John" Firkus, (USA); Marianna "Mary" Gavin; Franciszek "frank" Louis Firkus, Sr. and Mary Gavin