Lionel of Antwerp, 1st Duke of Clarence was born 29 November 1338 in Antwerp, Belgium to Edward III of England (1312-1377) and Philippa of Hainaut (1311-1369) and died 7 October 1368 Alba, Piedmont, Italy of unspecified causes. He married Elizabeth de Burgh, 4th Countess of Ulster (1332-1363) 1352 JL .
Children
| Name | Birth | Death | Joined with |
| Philippa Plantagenet, 5th Countess of Ulster (1355-1382) | 16 August 1355 Eltham Palace, Kent, England, United Kingdom | 5 January 1382 County Cork, Ireland | Edmund Mortimer, 3rd Earl of March (c1352-1381) |
Footnotes (including sources)
| ‡ General |