Fulke Fitz-Warine had a castle at Adderbury, the ruins of which were remaining at the time Dugdale wrote. This Fulke was left by King Richard I to defend the Marches of Wales when that monarch set out himself for the Holy Land; and in the 7th of the same reign [1196], he paid 40 marks to the crown for livery of Whittington Castle, in conformity with the judgment then given in his favour by the Court of King's Bench. After the accession of John in 1199, however, this castle was forcibly seized by the crown and conferred upon another person, which act of injustice drove Fitzwarine and his brothers into rebellion and they were, in consequence, outlawed; but through the mediation of the Earl of Salisbury (the king's brother) and the bishop of Norwich, the outlawry was reversed and FitzWarine, upon paying 200 marks and two coursers, had livery of the castle as his hereditary right, command being given to the sheriff of Shropshire to yield him possession thereof accordingly. About this time he paid tot he crown 1,200 marks and two palfreys for permission to marry Maud., dau. of Robert Vavasour, and widow of Theobald Walter.
In the 12th John [1211], he attended that prince into Ireland, and in the 17th he had livery of his wife's inheritance lying in Amundernesse, in Lancashire. After this we find him active in the baronial cause and amongst those excommunicated by the Pope; nor did he make his peace until the 4th of Henry III [1220], when he compromised by paying £262 and two great coursers for the repossession of Whittington Castle, which, in the baronial conflict, had again been alienated. Whereupon undertaking that it should not be prejudicial to the king, he had licence the next year to fortify the same; and he thenceforward evinced his loyalty by the good services he rendered against the Welsh under William Marshal, Earl of Pembroke, and by his personal attendance upon the king himself in his army at Montgomery. He had subsequently military summonses upon several occasions and fought at the battle of Lewes, anno 1263, under the royal banner, in which action he lost his life by being drowned in the adjacent river.
This celebrated lord m. 1st, as already stated, Maud, dau. of Robert Vavasour, and 2ndly, Clarice -----. He left at his decease a dau. Eve who became 2nd consort of Llewelyn the great Prince of North Wales ap Iorwerth Drwyndun, and a son, his successor, Fulke Fitz-Warine. [Sir Bernard Burke, Dormant, Abeyant, Forfeited, and Extinct Peerages, Burke's Peerage, Ltd., London, 1883, p. 213, Fitz-Warine, Barons Fitz-Warine]
NOTE: Burke has compacted two generations here, as it was his son who d. at the Battle of Lewes. If the father had died at the Battle of Lewes, he would have been near 100 years of age. It is also my opinion that the second marriage to Clarice referred to above is actually the marriage of his son to Constance de Toni.