Their daughter Lady Augusta Murray later became an unwanted daughter-in-law of King George III, when she married his son Prince Augustus Frederick without the consent of the King. The Dunmores had another daughter close to her age, Lady Catherine Murray, and soon after they landed in Virginia they had another child, Lady Virginia Murray. Their daughter Lady Susan Murray (1768–1826) had three husbands and children by each: first Joseph Tharp, heir to a Jamaica sugar fortune; second John Drew, son of the Chichester banker John Drew; and finally a clergyman in Ireland, the Reverend Archibald Edward Douglas.