About Anne Graham (Hewes)
From Darryl Lundy's Peerage page on Anne Hewes:
Anne Hewes 
- F, #539837
- Last Edited=19 Aug 2012
Anne Hewes married William Graham, 8th Earl of Menteith, son of John Graham, Lord Graham of Kinpont and Lady Mary Keith, in November 1661.
She and an unknown person were divorced on 19 July 1684 on grounds of her adultery with Robert Ross of Auchlossen, younger.
From November 1661, her married name became Graham. As a result of her marriage, Anne Hewes was styled as Countess of Menteith in November 1661.
- 1. [S37] Charles Mosley, editor, Burke's Peerage, Baronetage & Knightage, 107th edition, 3 volumes (Wilmington, Delaware, U.S.A.: Burke's Peerage (Genealogical Books) Ltd, 2003), volume 2, page 2752. Hereinafter cited as Burke's Peerage and Baronetage, 107th edition.