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Male Ervin Hinkley Click to view Ervin Hinkley in the family tree

1   Ervin's father was Wesley Eugene Hinkley and his mother was Adalaide E. Strout.  His paternal grandparents were George Russell Hinckley and Louise Lake. He had three brothers and a sister, named Arthur B., Carl E., Erving and Addie J.. He had a half-sister named Edna.1 

1 phelps.FTW
Further source/citation:
World Family Tree Vol. 16, Ed. 1 @ Tree #1604