Mortlock and his wife , Rosina Tennant , had six children although only two survived to adulthood .
Mortlock sat in the State Parliament for several years representing the electoral district of Flinders .
Mortlock and Mortlock 's wife , Rosina Tennant , had six children although only two survived to adulthood .
Mortlock sat in the State Parliament for several years representing the electoral district of Flinders .