Arthur Beauchamp (1827—28 April 1910) was a 19th century Member of Parliament from New Zealand. Arriving from Australia on 15 November 1858, he lived much of his life in a number of locations around the top of the South Island. His son Harold Beauchamp rose to fame as chairman of the Bank of New Zealand and the father of writer Katherine Mansfield.
Beauchamp represented the Picton electorate from 1866 to 1867, when he resigned. He is best-remembered for a 10-hour speech.[1]
In 1866 he attempted to sue the speaker of the house, David Monro. At the time the extent of privilege held by Members of Parliament was unclear; a select committee ruled that the suite could proceed, but with a stay until after the parliamentary session.[2]