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Male Alan Darwin Knapp Click to view Alan Darwin Knapp in the family tree

Alan Darwin's father was Harry Parker Knapp and his mother was Helene Birke.  His paternal grandparents were Rollin G. Knapp and Cora L. Parker. He had a brother named Edwin Birke. He had four half-brothers and a half-sister, named John Rollin, David Harry, Harry Ward, Roger G. and Jane Hamilton.

Sources/Citations
World Family Tree Vol. 1, Ed. 1 @ Tree #1377, phelps.FTW