Sir William Thomas Denison was Lieutenant Governor of Van Diemen's Land from 1847 to 1855, Governor of New South Wales from 1855 to 1861, and Governor of Madras from 1861 to 1866.
John Evelyn Denison, 1st Viscount Ossington, PC was a British statesman who served as Speaker of the House of Commons from 1857 to 1872. He is the eponym of Speaker Denison's rule.
Sir Evelyn Denison, speaker, in a Vanity Fair cartoon of 1870.