The son of Sir Patrick Warrender of Lochend, third baronet; he fought in the Peninsular War and served as Grenadier Guards before succeeding his brother George in the title in 1849.

REFERENCES TO Sir John Warrender, fifth baronet:

Henry Brougham to Thomas Creevey, 15 December 1814[?] in The Creevey Papers: A Selection from the Correspondence & Diaries of the late Thomas Creevey, M.P. (London: John Murray, 1903)

Maria Copley to Thomas Creevey, [1823] in The Creevey Papers: A Selection from the Correspondence & Diaries of the late Thomas Creevey, M.P. (London: John Murray, 1903)

Maria Copley to Thomas Creevey, 12 January 1823 in The Creevey Papers: A Selection from the Correspondence & Diaries of the late Thomas Creevey, M.P. (London: John Murray, 1903)

Thomas Creevey to Elizabeth Ord, 12 May 1824 in The Creevey Papers: A Selection from the Correspondence & Diaries of the late Thomas Creevey, M.P. (London: John Murray, 1903)