Allen Hancock 1826 - 1919 was the son of Cader Hancock and Mary Vinzant who married in Tattnall County Georgia USA in 1825.
As far as I know Allen married in Australia twice firstly to Olive Gaze (1855) and secondly to Eliza Weeks (1871) as per my earlier response to you.
Cader Hancock was the son of James and Jestern Hancock. If you go to the website below you will learn more of the Hancock family of Georgia and Florida. I have not heard of Allen Hancock born 1803 who married a woman called Rasberry. What state and county was he born in? Do you have any information on his parents or children?