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Male G. L. Wyckoff Click to view G. L. Wyckoff in the family tree

G. L. was born about 1864.1   G. L.'s father was Elijah Wyckoff and his mother was Mary Eliza Bryson.  His maternal grandparents were John Fielding Bryson and Ellizabeth Sparger. He had five brothers and a sister, named Nathaniel Green, Charles B., Elijah F., Fred, J. F. and Mrs. H. H..  He was the second youngest of the seven children.1 

1 phelps.FTW @ Tree #1353
Further sources/citations:
World Family Tree Vol. 4, Ed. 1 @ Tree #1353, 1353.ftw