Genealogy Questions? Ask a Genealogist for Answers ASAP
Welcome to Just Answer and thanks for your question. It appears you have already researched the arrival of Mr. Graham.
What other information do you have about him other than a name and the fact that he arrived in Port Jackson on 25 Jan 1839?
It's a fairly common name, so impossible to research without more information, and also knowing what particular fact we can research for you.
Looking forward to hearing from you,