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Male William Lyman Click to view William Lyman in the family tree

William was born on November 10th, 1730.1   William's father was Isaac Lyman and his mother was Thankful Smith.  His paternal grandparents were Richard Lyman and Elizabeth Cowles. He had three brothers named Caleb, Benjamin and Isaac. He had a half-brother and a half-sister, named Isaac and Abigail.1 

Family Details of William's family with Mary Wright

1 phelps.FTW @ Tree #1353
Further sources/citations:
World Family Tree Vol. 1, Ed. 1 @ Tree #3310, phelps.FTW, World Family Tree Vol. 4, Ed. 1 @ Tree #2332, 2332.ftw