1. William de Burgh, 6th Lord of Connaught and 3rd Earl of Ulster has few details recorded about him.
William de Burgh, 6th Lord of Connaught and 3rd Earl of Ulster had the following children:
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2. Elizabeth de Burgh, daughter of William de Burgh, 6th Lord of Connaught and 3rd Earl of Ulster, was born in 1332. She died in 1363 in Dublin. She married Lionel of Antwerp DUKE OF CLARENCE.
Lionel of Antwerp DUKE OF CLARENCE, son of Edward III KING OF ENGLAND (1312-1377) and Philippa de Hainault (1311-1369), was born on 29 November 1338 in Antwerp, Holland. He died on 7 October 1368 in Alba, Italy. He and Elizabeth de Burgh had the following children:
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3. Philippa Plantagenet of Clarence, daughter of Lionel of Antwerp DUKE OF CLARENCE and Elizabeth de Burgh, was born in 1355. She married Edmund Mortimer, 3rd Earl of March.
Edmund Mortimer, 3rd Earl of March was born in 1351. He died on 17 December 1381. He and Philippa Plantagenet of Clarence had the following children:
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| 6 | Edmund de MORTIMER (1376-1409). Edmund was born in 1376. He died in 1409. |
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