*Idonea de Clifford
born about 1300 Appleby, Westmoreland, England
died 24 August 1365
buried Beverley Minster, Beverley, Yorkshire, England

father:
*Robert de Clifford
born 1 April 1274 Clifford Castle, Herefordshire, England
died 24 June 1314 Battle of Bannockburn, Stirling, Scotland
buried Shap Abbey, Shap, Westmoreland, England

mother:
*Maud de Clare
born about 1276 Gloucestershire, England
died 1 February 1327
married 3 November 1295 Clifford Castle, Herefordshire, England

siblings:
Roger de Clifford born 21 January 1299/1300 Appleby, Westmorland, England
died 23 March 1322 York, Yorkshire, England
*Robert Clifford born 5 November 1305 Castle Clifford, Clifford, Herefordshire, England
died 20 May 1344 Yorkshire, England
Margaret de Clifford born about 1307 Appleby Castle, Westmorland, England
died 8 August 1382
John de Clifford born about 1307 Clifford Castle, Herefordshire, England
Andrew de Clifford born about 1309 Clifford Castle, Herefordshire, England

spouse:
*Henry de Percy
born 6 February 1300/01 Leconfield, Yorkshire, England
died 26 February 1351/52 Warkworth, Northumberland, England
buried 1352 Priory of Alnwick, Northumberland, England
married 1314 Yorkshire, England

children:
Margaret de Percy born about 1318 Alnwick, Northumberland, England
christened Alnwick, Northumberland, England
died 3 September 1376 Gyng, New Buttsbury, Essex, England buried Church of Friars, Chelmsford, Essex, England
*Henry de Percy born 1320 Castle Alnwick, Northumberland, England
died 18 May 1368 buried Alnwick, Northumberland, England
Richard de Percy born 1322 Alnwick, Northumberland, England
Roger de Percy born about 1324 Alnwick, Northumberland, England
Robert de Percy born 1326 Alnwick, Northumberland, England
Isabel de Percy born about 1326 Alnwick, Northumberland, England died 1368
Thomas de Percy born 1328 Alnwick, Northumberland, England died 1369
William de Percy born 1332 Alnwick, Northumberland, England
*Maud de Percy born about 1335 Warkworth Castle, Alnwick, Northumberland, England
died 18 February 1378/79 buried Durham Cathedral, Durham, England
Eleanor de Percy born about 1336 Alnwick, Northumberland, England died before 1368

biographical and/or anecdotal:

notes or source:
LDS
ancestry.com