[1] In 1837 Warburton was sent with a detachment of the royal artillery to assist the Auxiliary Legion in Spain, and was seriously wounded in action.
[1] In November 1854 Warburton retired from the army as major on full pay, and resided at Henley House, Frant, Sussex.
[1] Warburton wrote a description of the dominion of Canada, under its ancient vernacular name, as Hochelaga; or England in the New World (1846).
He wrote also:[1] Warburton married at St. George's, Hanover Square, on 1 June 1853, Elizabeth Augusta Bateman-Hanbury, third daughter of William Hanbury Bateman, 1st Baron Bateman, and had an only daughter, who became the wife of Lord Edward Spencer-Churchill, son of George Spencer-Churchill, 6th Duke of Marlborough.
In April 1869 his widow married George Rushout, 3rd Baron Northwick, and she was in 1886 the recipient of the Dunmow flitch.