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Male Henry Clay Adams Click to view Henry Clay Adams in the family tree

1   Henry Clay's father was Marcus Adams and his mother was Mary Stanley.  His maternal grandparents were Thaddeus Stanley and Elizabeth Doud. He had three brothers and eight sisters, named Elliott Stanley, John Quincy, Oliver, Jane Wilson, Elizabeth, Ellen, Harriet, Julia, Lucy, Martha and Mary.1 

1 phelps.FTW @ Tree #1353
Further sources/citations:
World Family Tree Vol. 4, Ed. 1 @ Tree #0574, 0574.ftw