Looking for William Fenton Born IN England Died IN Australia

Am looking for vitals for william fenton and his wife mary williams who had a child John Fenton born in alberton , Tasmania in 1841 and died in Bairnsdale, Victoria, Australia in 1921. John was married to a Martha Maundrell (1844-1911). William and Mary must have come to Australia from the U.K, where Martha was born. Hope someone can help. Thanks ChrisL