Following the death of John de Greystok in 1306,J. E. E. S. Sharp and A. E. Stamp (eds), '375. Inquisition of John son of William de Greystoke', in Calendar of Inquisitions Post Mortem and Other Analogous Documents, IV: Edward I (London: HMSO, 1913), pp. 245-46 (Internet Archive). the Barony of Greystok reverted to Ralph FitzWilliam in fulfilment of the arrangements made eight years previously,'Additions to Dugdale's Baronage', p. 314; also Calendarium Genealogicum, II, p. 713 (Hathi Trust) and Ralph, who was summoned to Parliament from 1295 to 1315,Parliamentary Writs, I, pp. 615-16 (Google). made homage and received royal assent to enter upon the barony in October 1306.Calendar of Close Rolls, Edward I, V: AD 1302-1307 (HMSO 1908), p. 420 and p. 494 (Internet Archive). In 1315 he founded a chantry at the conventual church of Tynemouth, under the aegis and seal of St Albans Abbey, for the soul of John de Greystok "quondam baronis de Graistok cognati sui" (i.e., "sometime baron of Graystok, his kinsman"), and for his own soul, the abbey's award to him describing Ralph Fitzwilliam as Baro de Graystok and bearing his seal.W. S. Gibson, The History of the Monastery Founded at Tynemouth, in the Diocese of Durham (London: William Pickering, 1846), I, p. 134 and II, p. cx (Google).
