Complex sentence: In 1857 at Brisbane he had married Margaret Louisa Lewis; of their ten children only two sons and two daughters survived him when he died in Coorparoo, Brisbane on 22 December 1912.
Split into simpler sentences: In 1857 at Brisbane he had married Margaret Louisa Lewis. Of their ten children only two sons and two daughters survived him when he died in Coorparoo, Brisbane on 22 December 1912.