Thank you so much. Here is what I know:
On my original birth cert. my father is Arthur Thomas Grant, place of birth Australia, and thats all. But I have found out that his birthplace was recorded as Rockhampton, Queensland. His father is Hwerbert Henry Grant (a retired farmer) and his mother Emma Grant (nee Bellert). He was married to my mother (Shirley Joyce Coley) on 24 June 1967 at St. John's Methodist Church, Cambridge Street, Levin and they were divorced on 25 June 1971. I have a letter from him to my mother, dated 20 October 1968, and the address was Winton Qld.
Hope this helps.