Ralph Fitzwilliam (c. 1256 – 11 February 1317), or Ralph, son of William de Grimthorpe, Lord of Greystoke, was a feudal baron with extensive landholdings in the North of England, representative of a manorial lordship seated where Grimthorpe Hill rises to commanding views a mile to the north of Pocklington in the Yorkshire Wolds. He gave sustained military service and leadership through the Scottish and Welsh campaigns of Edward I and was summoned to parliament from 1295 to 1315. His marriage in c. 1282 brought him other manors including Morpeth in Northumberland and its appurtenances. In 1297 he was enfeoffed as tenant-in-chief (feudal lord) of the entire barony of Greystoke, seated at Greystoke in Cumberland but with Yorkshire estates, through his matrilineal Greystok descent. He entered