William Alexander Mackinnon (1813 – 14 September 1903) was elected the Whig MP for Rye on 10 July 1852 but the result was declared void as a result of "treating". There was a question of £220 left behind a sofa cushion at the Red Lion to pay for a dinner. At the resulting bye-election the seat was taken by his father William Alexander MacKinnon. At the next election he was elected MP for Lymington which he held until 1868 but he never spoke in parliament. He was the 34th Chief of the Clan Mackinnon. He was educated at St John's College, Cambridge.
Personal life
He was born on 4 October 1813 at Portman Square. He married Miss Willes on 25 April 1846. Mackinnon died aged 90 at his home Acrise Place near Folkestone, Kent.