Katherine de Grandison Countess of Salisbury

✓ Katherine, da. of William, 1st Lord Grandison, by Sibyl de Tregoz; wife of William de Montagu, 1st Earl of Salisbury (I101899), and mother of William, 2nd Earl: on the death of her nephew Sir Thomas Grandison (1375) she was one of the coheirs, 'Katherine, wife of William (de Montagu), Earl of Salisbury, was mother of William (de Montagu), Earl of Salisbury, then of age, whose purparty as to rents in Dartford and the manor of Dymock ... was to be delivered by order of 16 Feb. 1375/6' (CP VI 'Grandison' pp.67-68). Mother of Sibyl Montagu (I101898), wife of Sir Edmund de Arundel, there being no other wife of the Earl. She is the 'Countess of Salisbury' of Froissart and Jean le Bel, around whom the legend of the founding of the Garter gathered (note-only). Her own article is CP XI 'Salisbury' (not online) - dates left for Aynsley's page. RING 27 Oct 2026 via the Tregoz-Cantilupe line once CP XII/2 'Tregoz' is read. Source: Complete Peerage 2nd ed. vol. VI (1926), 'Grandison' pp.60-68 and notes (archive.org completepeerageo06coka_0), read 27 Oct 2026. [DIRECT ANCESTOR OF THE COMPILER: flag added 27 Oct 2026 by walking the tree from Aynsley, so that this marker is reliable and can be searched.]