The Clare family descends from Gilbert Crispin, Count of Brionne and Eu, whose father Godfrey was the eldest of the illegitimate sons of Richard I, Duke of Normandy.
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The coat of arms can be seen in a modern-day context within the arms of Pontypridd Rugby Football Club.
The Norman family who took the name 'de Clare' became associated with the peerage as they held, at differing times, three earldoms (Gloucester, Pembroke, and Hertford).
The club badge is a representation of the Seal of the Llantrisant Town Trust representing the arms of the Consul, De Clare and Despenser families who had historical connections with Llantrisant.
County Clare | Clare Boothe Luce | Clare College, Cambridge | Clare | Clare of Assisi | Gilbert de Clare | Cassandra Clare | Clare Short | Jillian Clare | Clare Teal | Clare College | Clare Balding | Richard de Clare, 2nd Earl of Pembroke | de Clare | Clare, South Australia | Clare Gerada | Clare Bowditch | Earl of Clare | De Clare | Clare Rojas | Clare Martin | Clare Island | Clare Hall, Cambridge | Clare Bell | Clare B. Dunkle | Whitegate, County Clare | Stoke-by-Clare | Richard de Clare | Portrait of Clare | Mont Clare, Pennsylvania |
It depicts the wars between the Irish Uí Briain and the Anglo-Norman de Clares for control of the Thomond region of Ireland, drawing from contemporary sources for details.
His wife, Elizabeth de Burgh, 4th Countess of Ulster, was a direct descendant of the previous owners, the de Clares, and the Manor of Clare was among the lands which she brought to her husband.
Through these sons Gilbert was ancestor of the English house of de Clare, of the Barons FitzWalter, and the Earls of Gloucester (see Earl of Gloucester) and Hertford (see Earl of Hertford).
They also argue that only the English could have obtained the stone because the site of the quarry near Ogmore-by-Sea would have been defended by the de Clare family, at nearby Ogmore Castle, who opposed the Lord of Senghennydd.
They had two sons, Simon II de Senlis, Earl of Huntingdon-Northampton, and Waltheof of Melrose, and one daughter, Maud de Senlis, who married (1st) Robert Fitz Richard (of the De Clare family), of Little Dunmow, Essex.
In that year a major battle was fought at Dysert O'Dea as part of the Irish Bruce Wars, in which both Thomas De Clare and his son Richard were killed.
On the death of Isabelle de Clare, his son William Marshal, 2nd Earl of Pembroke gave his brother Richard his land in Normandy or the honours of Longueville and Orbec.
The death of Gilbert de Clare, the Lord of Glamorgan and the most prominent landowner in the south, at the battle of Bannockburn in June 1314, left a power vacuum in the region, and the heavy-handed response of the English Crown towards overseeing de Clare's lands there, combined with the death of several hundred men of Glamorgan at Bannockburn, precipitated a revolt in the lordship in late summer of that year.