Mary de Clifford was born circa 1416 in Appleby, Westmoreland, England, United Kingdom to John Clifford, 7th Baron de Clifford (1388-1421) and Elizabeth Percy (c1395-1436) and died 4 October 1478 of unspecified causes. She married Philip Wentworth (1424-1464) 1447 JL in Skelton, Yorkshire, England, United Kingdom. Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Henry II of England (1133-1189)/s, Hugh Capet (c940-996)/s, William I of England (1027-1087)/s.
|Offspring of Philip Wentworth and Mary Clifford (c1416-1478)|
|Henry Wentworth (c1448-1501)||1448||27 February 1501||Anne Say (1453-1494) Anne Say (1453-1494) Elizabeth Nevill (1464-1517)|
|Elizabeth Wentworth (1420-?)||1420||Martin de la See (1420-1494)|
|Margaret Wentworth (-1479)|