1. Sir Walter Giffard, Lord of Longueville married Agnes Flaitel.
Agnes Flaitel and Sir Walter Giffard, Lord of Longueville had the following children:
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2. Rohese Giffard, daughter of Sir Walter Giffard, Lord of Longueville and Agnes Flaitel, was born circa 1034. She married Richard Fitz Gilbert, Earl of Clare, Lord of Beinfaite, Orbec and Tonbridge in 1054. She died in 1133.
Richard Fitz Gilbert, Earl of Clare, Lord of Beinfaite, Orbec and Tonbridge, son of Gilbert (Giselbert) "Crispin", Count of Brionne and EU (c. 980-1040) and Constance de EU ( - ), was born in 1035 in Normandy. He died in 1090 in St. Neot's Priory, Huntingdonshire. He and Rohese Giffard had the following children:
| +3 | Gilbert Fitz Richard , Earl of Clare, Tonbridge and Cardigan (1065-1115) |
3. Sir Gilbert Fitz Richard , Earl of Clare, Tonbridge and Cardigan, son of Richard Fitz Gilbert, Earl of Clare, Lord of Beinfaite, Orbec and Tonbridge and Rohese Giffard, was born in 1065. He married Adelize (Alice) de Claremont in 1086. He died in 1115.
Gilbert Fitz Richard (1065-1115) was son of Richard Fitz Gilbert and Rohese Giffard. He succeeded to his father's possessions in England, his brother, Roger Fitz Richard, succeeding to his father's lands in Normandy.
He was granted lands and the Lordship of Cardigan by Henry I, including Cardigan Castle. He founded the Priory at Clare. Supposedly present at the suspicious death of William II in 1100. Fathered nine children, two of whom became peers of the realm.
Adelize (Alice) de Claremont was the daughter of Hugh de Creil, Count of Clermont ( - ) and Margaret de Roucy ( - ). She and Gilbert Fitz Richard , Earl of Clare, Tonbridge and Cardigan had the following children:
| 4 | Richard Fitzgilbert de Clare, 1st Earl of Hertford (1094-1136). Richard was born in 1094. He was a Founder of Tonbridge Priory. He died on 15 April 1136. |