He was probably born during the late 1300s ... if his father died during the reign of Henry IV (30 Sep 1399 - 20 Mar 1413), and he lived during the reign of Henry V (20 Mar 1413 – 31 Aug 1422).[4]
Rowland Forster of Norham (d.1497). Issue: 2 sons[4]
Marriage
Thomas married a daughter of Fetherstonhaugh, who supposedly had 22 children. While some pedigrees do not state her given name Foster (1871), calls her "Elizabeth. " It's unclear as to how he arrived at this conclusion.
m. [--Elizabeth--?], dau. of ... Fetherstonhaughor Featherstonhaug of Stanhope. Issue: 22[5][1][2][3][6]
children
Thomas of Adderstone, co. Northumb. - ancestor of Forsters of Adderstone & Brunton in co. Northumb.
Foster (1871), states that Thomas also fought at the Battle of Agincourt (25 Oct 1415), under Percy ... but he does not say which one. Hotspur died at Shrewsbury in 1403,[9] so he could have been a contemporary of his son, Henry Percy, 2nd Earl of Northumberland (03 Feb 1393 – 22 May 1455).
↑ 1.01.11.2CAUTION Weis, F.L., Sheppard, W.L. & Beall, W.R. (1999). The Magna Charta Sureties, 1215, 5th ed. Baltimore: Genealogical Publishing. Google Books.
↑ 2.02.1 "Foster-Chapman families," (1920). Americana, 14, p. 402). National Americana Society. Google Books.
↑ 3.03.1CAUTION Sir Richard Forester of Flanders, (2011, September 2011). Miner Descent. Weblog.
↑ 4.04.14.24.34.4 Foster, J. (1871). A Pedigree of the Forsters and Fosters of the North of England and Some of the Families Connected with them. Archive.org. [1].
↑ 5.05.1 Collins, A. (1720). The Baronettage of England, 2, p.120 - 121. London: W. Taylor. Google Books.
↑ "Forster was knighted, and married the daughter of Fetherstonhaugh, of Stanhope Hall, Durham, Chief of the Fetherston clan. This family is of Saxon origin. He was the father of 19 sons (Pierce, 1899)
The problem is that there's not much proof. It's more of a case of a missing generation that becomes glaring about this point and again at Roger of Hunsdon. It's also the case that Richardson has nixed this family from the Magna Carta line because Elwerdon's heritage/marriage into this family is disputed. So getting too creative would probably just introduce more errors on top of the old... But I'm trying to hunt down extras...