1416 Richard ap Ieuan died on September 10. The lands he held in right of his late wife Isabel descended to his grandson John Oldcastle, son of Richard and Isabel's late daughter Katherine by her husband John Oldcastle, knight. His IPM states, "Richard ap Yevan, 674 Writ 20 Nov. 1416. Buckingham. Inquisition. Southcott. 10 Feb. 1417. Isabel the late wife of Richard ap Yevan held in her desmesne as of fee 1 messuage, 100 a. arable, 15 a. meadow and 4 a. pasture called 'Freselles' in Bledow; 1 virgate of 30 a. in the same place which John Syward holds at farm; 1 messuage, 80 a. arable and 5 a. meadow in Princes Risborough; 30 a. arable and 4 a. wood in the same which William Petypas holds at farm; and 2 messuages, 160 a. and 2 a. in the same and in Aston Sandford called 'Freselles'. So seised she married Richard and had issue Katharine who married John Oldecastell, knight. They had issue John Oldecastell. Katharine died and Isabel died holding the premises in her desmesne as of fee. Then Richard held by the courtesy of England with reversion to John son of Katharine. So Richard died. The 100 a. etc. in Bledlow called 'Freselles' is held of the rector of Bledlow in socage by a yearly rent of 2s., annual value 2 marks; the virgate in Bledlow of Bernard Saunderdon in socage by a rent of 14d., annual value ½ mark; the messuage and 80 a. in Princes Risborough of the king of the honor of Wallingford in socage by a rent of 1d., annual value 20s.; the 30 a. etc. in Princes Risborough of the king of the same honor in socage, by rent of 6d., annual value ½ mark; and the messuage etc. in the same place and in Aston Sandford called 'Freselles' of the king in socage of the same honor by a rent of 20s., annual value 20s. He died on 10 Sept. last. John Oldecastell, son of Katharine, his heir is aged 20 years and more. C 138/24, no. 57." [1]
[1] J. L. Kirby, ed., Calendar of Inquisitions Post Mortem, Vol. 20, 1-5 Henry V, 1413-1418 (London: HMSO, 1995), 211-212, no. 674, [BritishHistoryOnline].