Krieger Roots

I am trying to trace my Krieger roots to Germany.
I know that my Great grandfather Friedrick Krieger was born in Poland/Russia on August 22, 1883 to Karl and Anna(Vowoka)sp? Krieger. Friedrich migrated to Canada in 1904. I am assuming Karl and Anna died in Russia. I am not sure of their dates of birth or dates of death. Friedrick died in Dunn County, North Dakota in 1960. Anyone know of Karl and his family? THanks