Marcellus Purnell Castle MVO, JP (1849–21 March 1917), known as M.P.
[1] Castle was the owner of the Albion Brewery at Brighton.
He resigned as Vice President in 1902 and was replaced by the Earl of Crawford.
In 1911 he was awarded membership of the Royal Victorian Order by King George V. In 1913 he became President of the Royal Philatelic Society, which office he occupied until his death in 1917.
He won a gold medal for his display of New South Wales at the London Philatelic Exhibition 1890.