Lady Mary Elizabeth Bertie was the daughter of Brownlow Bertie, 5th Duke of Ancaster and Kesteven and Mary Anne Layard. She married Thomas Charles Colyear, 4th Earl of Portmore, son of William Charles Colyear, 3rd Earl of Portmore.
Mary married Thomas Charles COLYEAR on 26 May 1793 in England. Thomas was born on 27 Mar 1772; was christened on 27 Apr 1772 in Marylebone, Middlesex, England; died on 18 Jan 1835. [Group Sheet] [Family Chart]