| Children |
| | 1. Joan FitzPiers, b. 1183, Breconshire, Wales, United Kingdom d. 1205, Cheadle, Staffordshire, England, United Kingdom (Age 22 years) |
| | 2. Beatrice FitzPiers, b. 1203, Breconshire, Wales, United Kingdom d. DECEASED |
| | 3. Lady Lucy De FitzPiers, b. 1204, Cathedine, Breconshire, Wales d. Aft 1266, Yorkshire, England, United Kingdom (Age > 63 years) |
| | 4. Herbert FitzPiers, b. Abt 1204, Breconshire, Wales, United Kingdom d. Bef 27 May 1248, England, United Kingdom (Age < 44 years) |
| | 5. Sir Reynold, 'Reginald', Lord of Blaen Llyfni, Sheriff of Hampshire, Fitzpiers, b. 1208, Breconshire, Wales, United Kingdom d. 4 May 1286, England, United Kingdom (Age 78 years) |
| | 6. Reginald FitzPiers, b. 1208, Basing, Hampshire, England, United Kingdom d. 4 May 1286, Wolverton, Hampshire, England, United Kingdom (Age 78 years) |
| | 7. Peter FitzHerbert d. DECEASED |
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