Idoine de Clifford was born circa 1300 in Appleby, Westmorland, England, United Kingdom to Robert de Clifford, 1st Baron de Clifford (1274-1314) and Maud de Clare (c1276-1327) and died 24 August 1365 Alnwick, Northumberland, England, United Kingdom of unspecified causes. She married Henry de Percy, 2nd Baron Percy (1299-1352) 1314 JL in Yorkshire, England, United Kingdom. William I of England (1027-1087), Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Hugh Capet (c940-996)/s, William I of England (1027-1087)/s, Rollo of Normandy (860-932)/s.
|Henry de Percy, 3rd Baron Percy (1320-1368)||1320||May 1368 England, United Kingdom||Mary of Lancaster (c1320-1362) |
Joan Orreby (-1368)
|Thomas Percy, Bishop of Norwich|
|Roger Percy (c1324-)|
|Maud Percy (-1379)||18 February 1379||John Neville, 3rd Baron Neville de Raby (1328-1388)|
|Eleanor Percy (c1328-)|
|Isabel Percy (c1330-)|