William de Arches Lord of Thorp

  Noted events in his life were:

• Background Information. ⁸⁹⁵
Osbern's (William's father) surname in the Domesday Servey was written De Arcis which would be Arches, a place in Normandy. Osbern de Arches was Sheriff of Yorkshire about 1100. It is not known when he died or when he was born, but he was succeeded by his eldest son, William de Arches. William along with his wife Ivetta, found the Benedictine Priory at Nun Monkton. There was no male heir to this family, so Thorp passed to Ivetta who married twice, first to Roger de Flamville, and second to Adam de Brus, of Skelton, in Cleveland, who survived his wife Ivetta. Ivetta died in 1152, and was buried at Guisburgh Priory, which was founded by Robert de Brus in 1119.
~Lower Wharfedale, pp. 421-422