[1] He was educated at Windlesham House School (1838-42), Eton College and Christ Church, Oxford.

[1][2] Monson was elected Member of Parliament for Reigate in 1858, a seat he held until he succeeded his father in the peerage in 1862 and entered the House of Lords.

[3] He served under William Ewart Gladstone as Treasurer of the Household in 1874 and as Captain of the Yeomen of the Guard between 1880 and 1885 and in 1886[3] and was sworn of the Privy Council in 1874.

[6] Lord Oxenbridge married Maria, Dowager Countess of Yarborough, daughter of Cornwallis Maude, 3rd Viscount Hawarden, and widow of Charles Pelham, 2nd Earl of Yarborough, on 7 August 1869.

Lord Oxenbridge only survived her by a few months and died in April 1898, aged 69.