Gilbert de , 1st Earl of Pembroke CLARE
Burke's Peerage & Baronetage, 106th Edition, Charles MosleyEditor-in-Chief, 1999, 2217
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Earldom of Pembroke: Those who were created Earls of Pembroke before therise of the Herberts from the 15th century on were predominantly closerelatives of the reigning mocharch. This was not so in the first andhistorically most important case, however, Gilbert Fitz Gilbert or deClare was made Earl of Pembroke in 1138 by King Stephen, his elderbrother Richard Fitz Gilbert or de Clare being father of theAlice/Adelaide who married William de Percy. In the period of unrest andindecisive civil war known as the Anarchy, when followers of Stephen,Henry I's nephew, struggled with the Empress Maud, Henry I's daughter,Gilbert Earl of Pembroke sided with each one. He already held Chepstow,on the Welsh-English borders. In 1144 he pushed far into South Wales andestablished himself at Carmarthen. [Burke's Peerage]
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Earldom of Pembroke: His [Gilbert's] son the 2nd Earl of Pembroke("Strongbow") was instigator of the Anglo-Norman/Cambro-Norman incursioninto Ireland in 1169 or 1170. Pembroke himself managed to subdueLeinster. His daughter and ultimately heiress married William (the)Marshal, who was created Earl of Pembroke in 1199 by King John, though hemay already have had some kind of status as Earl of Pembroke in right ofhis wife. [Burke's Peerage]
He married Isabel Elizabeth de Beaumont Bef 1130 at Tunbridge, Kent, England . Isabel Elizabeth de Beaumont was born at Leicester, Leicestershire, England Bef 1096 daughter of Robert I de , 1st Earl of Leicester Beaumont and Isabel Elizabeth de Vermandois .
They were the parents of 1
child:
Richard Strongbow de , 2nd Earl Pembroke Clare
born Abt 1130.
Gilbert de , 1st Earl of Pembroke Clare died 6 Jan 1147/48 at Carmarthen, Carmarthenshire, Wales .
Isabel Elizabeth de Beaumont died 6 Jan 1147/48 at Carmarthen, Carmarthenshire, Wales .