Among the first persons of note to whom William the Conqueror committed the defence of the Marches towards Wales was Guarine de Meer (a member of the house of Lorraine), to whose custody he confided Adderbury, co. Salop, and Alestoun, co. Gloucester, of which former county Guarine was sheriff, in the year 1083, and he was at the same time one of the chief councillors to Roger de Montgomerie, Earl of Shrewsbury. Of this Guarine, it is stated, that, having heard that William, a valiant knight, sister's son to Pain Peverell, Lord of Whittington, in Shropshire, had two daus., one of whom, Mallet, had resolved to marry none but a knight of great prowess, and that her father had appointed a meeting of noble men at Peverel's Pace, on the Peke, from which she was to select the most gallant, he came thither, when, entering the lists with a son of the King of Scotland and with a Baron of Burgundy, he vanquished them both and won the fair prize with the lordship and castle of Whittington. At this place he subsequently took up his abode and founded the Abbey of Adderbury. He was s. at his decease buy his son, Sir 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]