• Wikipedia contributors. "William Wellesley-Pole, 3rd Earl of Mornington." Wikipedia, The Free Encyclopedia.
• Burke, Bernard, Sir. A genealogical and heraldic dictionary of the peerage and baronetage of the British Empire. London : Harrison 1869. page 1165

Obituary as reported in South Australia 1845

The Earl of Mornington's demise took place at the family mansion in Grosvernor square, on the 1st March. The deceased nobleman, William Wellesley Pole, third Earl of Mornington, Viscount Wellesley, and Baron Maryborough, was brother to the Duke of Wellington and Lord Cowley. He is succeeded by William Wellesley Pole, who married 14th March, 1812, Catherine, only daughter and heiress of the late Sir James Tylney Long, Baronet, upon which occasion he assumed the names of Tylney and Long.

OBITUARY. (1845, July 26). South Australian Register (Adelaide, SA : 1839 - 1900), p. 4. Retrieved February 11, 2016