Sir William de Grandison, Knt., 1st Lord Grandison

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Sir William de Grandison, Knt., 1st Lord Grandison, son of Pierre de Grandison, seigneur of Grandson and Agnès de Neufchâtel, was born after 1242, as he was a minor in 1263.1 He died 17 June 1335.1

William probably married (1) Jeanne of Gruyère, daughter of Pierre II, count of Gruyère, about 1267/68;2 he married (2) Sibyl de Tregoz, daughter of Sir John de Tregoz, Knt., Lord Tregoz and Mabel FitzWarin, before 1285.3,4

Family 1

Jeanne of Gruyère d. abt. 1283/84
Children
  • John de Grandison5 b. aft. 1268, d. bef. 1306
  • Gerard de Grandison5 b. 1268 or 1269, d. bef. 1306
  • Agnes de Grandison+6 b. 1282/83, d. 11 Dec 1357

Family 2

Sibyl de Tregoz d. abt. 21 Oct 1334
Children
  • Katherine de Grandison+1 b. aft. 1285, d. 23 Apr 1349
  • William de Grandison, Archdeacon of Exeter3 b. aft. 1285
  • Sir Otes de Grandison, Knt.3 b. aft. 1285
  • Thomas de Grandison7 b. aft. 1285
  • Edmund de Grandison3 b. aft. 1286
  • Sir Peter de Grandison, Knt., 2nd Lord Grandison3 b. aft. 1286, d. 10 Aug 1358
  • John de Grandison, Bishop of Exeter, 3rd Lord Grandison3 b. aft. 1286, d. 16 Jul 1369
  • Mabel de Grandison3 b. aft. 1286
  • Maud de Grandison3 b. aft. 1286
  • Agnes de Grandison3 b. aft. 1286, d. 3 Dec 1348
This person was last edited on14 Jun 2021

Citations

  1. [S1947] Douglas Richardson, Royal Ancestry: A Study in Colonial and Medieval Families, Five vols. (Salt Lake City, Utah: s.p., 2013), 3:97 (Grandison 2, further cited as Richardson, Royal Ancestry.
  2. [S2180] David Williams, "The First Marriage and Issue of William de Grandison, 1st Lord Grandison (d.1335)," Foundations: Journal of the Foundation for Medieval Genealogy 10 (2018): 89-97, at 91, further cited as Williams, "William de Grandison."
  3. [S1947] Richardson, Royal Ancestry, 3:97 (Grandison 2).
  4. [S2180] Williams, "William de Grandison," 89.
  5. [S2180] Williams, "William de Grandison," 96.
  6. [S2180] Williams, "William de Grandison," 94.
  7. [S1947] Richardson, Royal Ancestry, 3:99 (Grandison 2).