Gilbert de Clare
M, b. 13 September 1229
| Father | Sir Gilbert de Clare 4th Earl of Hertford b. c 1180, d. 25 Oct 1230 |
| Mother | Isabel Marshall b. 9 Oct 1200, d. 17 Jan 1240 |
Gilbert de was born on Thursday, 13 September 1229 in Herefordshire, England. Gilbert as a last son with no inheritance, became a priest.