William Charles Rees is the son of William Maurice Rees and Constance Annie MacDuff Adams.

William was born in 1924 (date suppressed) in West Bromwich, Staffordshire.

William married Doris Adams Cook in 1951 in Wolverhampton, Staffordshire.

He had the following children from his marriage to Doris Adams Cook:

- Katherine Alison Rees

born in 1963 in Dudley, Worcestershire.

Details of William's occupation are not known.