Hello. My Uncle was named James Newton Rigby and your date of birth for him sounds about right. Bolton as a birth place fits him as well because I knew him to be from Yorkshire and a resident of Birmingham before he emigrated to Australia, Circa 1951 - 1954. I have no recollection of him having a brother, but he certainly died in Melbourne, date of death unknown to me. The unusual name plus the two coincidences - the birthplace and the place of death, encourage me to think that there's at least a strong possibility that we have the same man. I have other information about him and am also seeking further information about the family and so would welcome an exchange of information. I believe I have in my possession some photographs of him, possibly including a wedding photograph. Happy to scan these and forward them if we establish that he's the person you are seeking. Also have a photo of his only child, a daughter, fate unknown. My best direct email is: firstname.lastname@example.org Or: email@example.com But I do not check that latter address as frequently.