I have a Wm. MALPASS b. abt. 1811 in Clayhills, Shropshire, England, later moved to Dudley area of BlackCountry. His wife is Susannah SMITH, they married 7 June 1840 in Dudley, Worcs., England.
One of his brothers was named John MALPASS, also b. Clayhills, Salop., but I have no other info. on him. Sorry! However, I believe that Wm. his brother is listed as a miner.
All the best,