Montagu was twice married. On 8 April 1706, he married Ricarda Posthuma Saltonstall (–1711). Before her death in 1711, they were the parents of one daughter: • Lady Lucy Montagu (–1734), who married
Francis North, 1st Earl of Guilford. On about 28 June 1712, Montagu married Lady Mary Lumley (1690–1726), a daughter of
Richard Lumley, 1st Earl of Scarborough. Together they had at least seven children, including: •
George Montagu, 2nd Earl of Halifax (1716–1771), who inherited his father's titles in 1739. • Lady Frances Montagu (d. 1768), who married
Sir Roger Burgoyne, 6th Baronet, in 1739. • Lady Anne Montagu (–1766), who married Joseph Jekyll of
Dallington, in 1750. • Lady Mary Montagu (d. 1743), who married
Sir Danvers Osborn, 3rd Baronet MP, in 1740. • Lady Elizabeth Montagu (d. 1789), who married
Henry Archer MP, second son of
Andrew Archer MP and Elizabeth Dashwood (a daughter of Sir
Samuel Dashwood,
Lord Mayor of London in 1702) in 1743. • Lady Barbara Montagu (d. 1765), who died unmarried. • Lady Charlotte Montagu (d. 1762), who married Col.
James Johnston, a son of
Secretary of State, Scotland James Johnston, in 1747. George Montagu died in 1739 and was succeeded in the titles by his son
George.
Descendants Through his eldest child Lucy, he was a grandfather of
Frederick North, Lord North, who served as the
prime minister of Great Britain from 1770 to 1782. ==References==