Family: Edmund de Mortimer / 5th Countess of Ulster Philippa of Clarence (F8496)
m. May 1368
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Male
Edmund de Mortimer
Birth 1 Feb 1352 Yorkshire, England 
Death 27 Dec 1381 County Cork, Ireland Burial Aft 27 Dec 1381 Herefordshire, England Marriage May 1368 Berkshire, England Father Roger De Mortimer | F719 Group Sheet Mother Countess Of March Philippa De Montacute | F719 Group Sheet
Female
5th Countess of Ulster Philippa of Clarence
Birth 16 Aug 1355 Kentshire, England Death 5 Jan 1382 County Cork, Ireland Burial 8 Jan 1382 Herefordshire, England Father Duke of Clarence Lionel of Antwerp | F8237 Group Sheet Mother Elizabeth de Burgh | F8237 Group Sheet
Female
+ Elizabeth Mortimer
Birth 12 Feb 1371 Yorkshire, England Death 20 Apr 1417 Sussex, England Burial 29 Apr 1417 Sussex, England Spouse Henry Percy | F10314 Marriage 10 Dec 1379 Yorkshire, England
Male
+ 4th Earl Of March Roger Mortimer
Birth 11 Apr 1374 Yorkshire, England Christening 11 Apr 1374 Yorkshire, England Death 20 Jul 1398 County Meath, Ireland Burial 23 Aug 1398 Herefordshire, England Spouse Eleanor Holland | F4282 Marriage 7 Oct 1388