>>1. The date R A Little was married and the name of the venue/church.
9 May 1916 to Vera Gertrude Field from Dover.
I don't know the venue.
>>2. Birthdate and place of his son.
Don't know except he was born in early 1917.
3. His son's name.
Robert James Alexander
(Attended Wesley College in Melbourne. Became an electronic engineer served 20 years on the staff at University of Melbourne - died August 1976 12 months BEFORE his mother)
This info comes from that new book Australian Fighter Aces 1914-1953 by A D Garrison Published by the RAAF Air Power Studies Centre. The book says Little's log books and medals are held at the AWM ('though not on display).
Hope that helps.