William Cleg Eastwood was born around 1765 in Bolton, Yorkshire.

William married Nancy Haywood in 1793 in Bolton, Yorkshire.

(The marriage was in July 1793).

He had the following children from his marriage to Nancy Haywood:

- Ellen Eastwood

born in 1805 in Sawley, Yorkshire.

Details of William's occupation are not known.

Details of William's death are not known.