| Title | "Richard de Clare, 3rd Earl of Hertford" | |
| Publisher | Wikipedia: The Free Encyclopedia. Wikimedia Foundation, Inc., https://en.wikipedia.org/wiki/Richard_de_Clare,_3rd_Earl_of_Hertford, 8 May 2021 | |
| Source ID | S54 | |
| Linked to | Rhys Gryg Rhys ap Gruffydd Mathilde de Clare | |
