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| | Royal and Noble - History - Royal Genealogy - Earls of Warwick (Site not responding. Last check: 2007-10-08) |
 | | Henry de Beaumont (b.c.1046 - d.1123), 1st Earl of Warwick, son of Roger de Beaumont and of Adeline de Meulan, married Marguerite du Perche and by her had issue: |
 | | Thomas (b.c.1213 - d.1242), 6th Earl of Warwick, married Ela Longespee, and by her had no issue. |
 | | John Mareschal (d.1243), 7th Earl of Warwick in right of his wife, and by her had no issue; Margaret (b.c.1215 - d.1253), 7th Countess of Warwick de jure; John du Plessis (d.1263), 7th Earl of Warwick in right of his wife, and by her had no issue. |
| www.royalandnoble.com /History/Royal%20Genealogy/earlswarwick.html (645 words) |
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