I am searching for Mary Sullivan born around 1841 in Ireland. She marries John Sullivan in 1859 in Sydney and they have five children, Ann (Anastasia), Ellen, William (my great grandfather), Margaret and Michael. I can track the children, their marriages etc but I cannot find any trace of Mary (Fitzgerald) Sullivan after the birth of Michael in 1870. John dies in 1877 and two of the girls are sent to Industrial School (school for at risk children) and the record states in 1877 that the mother is dead. I have just about bought every Mary Sullivan death certificate to no avail.