Neils Hansen Queensland Australia.

Little is known about the early life of Neils Hansen. My great grandfather was born in 1860 in Assens Denmark to Lars Hansen and Mary Heinricksen. He married my great grandmother Mary Kate Meehan at Laidley Queendland Australia on 29/12/1839 - I have a marriage certificate. He died on 11/6/1899 - I have a death certificate. He came to Queensland on some ship at 21 or younger. Any tips appreciated.