In 1858 William Alexander Blackett married Margaret Madden in Victoria, Australia. They had at least 9 children in Victoria before moving to Tasmania around 1877/78 where a further four children were born. William’s marriage record shows him as being born in Germany, the son of Alexander Hal Blackett, a sailor, and Mary Jane. The 1876 birth record of his son Francis Arthur Blackett, however, shows his place of birth as Montreal, Lower Canada. It is not clear which, if any, of these entries is correct, nor is anything further known of Alexander Hal Blackett.
For a descendancy chart of William Alexander Blackett and Margaret Madden please click here.