Looking for Cosgrove IN Adelaide Australia

i im seeking information on the cosgrove/turners in south australia. Colin James Cosgrove (deceased) was my father. he married sandra moores (born uk,manchester) in 1963. they had 4 children. marriage ended, colin remarried a lady named maria, colin now deceased. his father was a soldier and died in papua new guinea in 1940. he was known as 'jack' cosgrove, i believe it 2 be leonard james cosgrove but i could be wrong. nobody ever talked about him.