I am also interested in this family. Your ancestor would have arrived on the Princess Louise to Adelaide in August 1849. I know this because my ancestor I beleive arrived on the same ship.He was a sailmaker I beleive on that vessel, although I can not confirm his actual entry. His name was Theodor Engelbrecht. Further to that his grandfather Christoph Wilhelm Ludwig Engelbrecht married a Anna Louise Engelbrecht in Germany in 1790. Hence I am interested in the genealogy of the Esselbach family