Morrison S of Down Ireland

I am looking for imfo. on William Morrison born 1808 in Kilmore Down Ireland. He was a soldier ,and went to Tasmania in 1847 to help guard prisoners. along with his family and 12 other soldiers.
His wife was Elizabeth Haughton,one of the 3 children to travel with him was John. they had Mary, Richard, and James in Aust.
Can anybody find hime or the children in Tasmania please.
Thanks Poodle