biography text
On coming of age Montagu was returned as a Whig on his family’s interest for Northampton. At George I’s accession he was appointed to the greatest sinecure in England, the auditorship of the Exchequer, worth £7,000 a year, by his uncle, Charles Montagu, Earl of Halifax, then 1st lord of the Treasury, to whose barony he succeeded in 1715, the earldom of Halifax being at the same time revived in his favour. He died 9 May 1739.