From Darryl Lundy's Peerage page on Mary Montagu:

http://www.thepeerage.com/p46003.htm#i460027

Lady Mary Montagu [1]

• F, #460027
• Last Edited=14 Aug 2011

Lady Mary Montagu is the daughter of George Montague, 1st Earl of Halifax and Lady Mary Lumley.[2]

She married Sir Danvers Osborn, 3rd Bt. in 1740.[2] From 1740, her married name became Osborn.[2]

Citations

• 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 2585. Hereinafter cited as Burke's Peerage and Baronetage, 107th edition.
• 2. [S3409] Caroline Maubois, "re: Penancoet Family," e-mail message to Darryl Roger Lundy, 2 December 2008. Hereinafter cited as "re: Penancoet Family."