"Willielmus de Meschines et Cecilia uxor mea" founded Bolton Priory by undated charter. "Cecilia de Romeli" donated property to Bolton Priory by undated charter which names "gener meus Willielmus nepos regis Scotiæ Duncani". "Willielmus de Meschines et Cecilia uxor mea" founded Bolton Priory by undated charter. "Willielmus filius Ranulphi" confirmed the foundation of St Bee's priory, Cumberland by undated charter, dated to [1105/20], which refers to donations by himself and "uxoris meæ eciliæ…concessione Ranulphi filii mei". Her children by her first marriage used the name Rumilly. Domesday Descendants notes that Cecily de Rumilly married as her second husband "Henry de Tracy of Barnstaple", without citing the corresponding primary source, but adds that "there is no evidence to suggest that she was the mother of Henry de Tracy's heir Oliver". 1
II. CECILY DE RUMILLY. [continued from notes under her father Robert de Rumilly.]
As shown above there is good evidence that Robert de Rumilly was her father, from whom she inherited Skipton, Harewood and lands in other counties. She married, first, William Meschin, lord of Copeland, and, secondly, Henry de Tracy.
William Meschin, her first husband, was a younger son of Ranulf, vicomte of the Bessin, by Maud sister of Hugh, vicomte of the Avranchin and earl of Chester, and so a younger brother of Ranulf Meschin, who became earl of Chester in 1120...
The descent of the Rumilly lands in Dorset and Devon shows that William Meschin held them in right of his wife. It is reasonably certain that it was in her right that he held the honour of Skipton and its lands in Yorkshire, and probably also Harewood with many manors in Wharfedale.... 2
Cecily de Rumilly and William Meschin were two of the most powerful magnates in the north and, therefore, it is not surprising that they wished to demonstrate their standing not only by supporting religious houses with gifts, but also by the foundation of monasteries, such as that of Embsay. A notification to Archbishop Thurstan regarding the gift of the churches of Holy Trinity, Skipton, St. Andrew, Kildwick, and Harewood states that Cecily was the daughter of 'R. Rumill'', while William, her lord and husband, was the son of 'Ran'', these being Robert de Rumilly and Ranulf Meschin respectively. 3