"Only two children survived from [William’s] three marriages:
Thomas the heir (1704-1773), son of William and Alice
and Charles (1720-1747) son of William and Catherine". [CR]

This family is extremely well recorded - have you done a Google search? Looked at wills?

William Radcliffe (c. 1670-1754) was married three times
to Alice Martin (d.1708), Catherine Sayle (d. 1725) and Jane Sumpter als Lace (d. 1754).

Will: RADCLIFFE, Alice 1708-1 And MARTIN E w 0991649
To sister in law Bahee Martin; nephew John Martin; to her husband [unnamed]; to her brothers John M and Henry Martin; to her mother in law Issable Kneale; to Cath Christian; to Margt Saile; apptd her only son Thomas Radcliffe sole exec; nominated her two brothers supervisors. March 21 1727 Tho. Radcliffe the execr owns to be paid from his father Wm Radcliffe... last will of mother Alice R als Martin.

Brother Charles's will:
Charles Radcliffe, 1747
Original: LDS: 0106219
www.mannincloud.info/wills/174/1747_003.html

Thomas Radcliffe, 1773
Original: LDS: 0106392
www.mannincloud.info/wills/177/1773_007.html

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