Sorry for the delayed reply we have been subjected to the worst bush fires I have ever seen or been involved with it has been catastrophic with over 14 home's destroyed or badly damaged as a result the amount of infrastructure to be restored is huge i have finally been able to rebuild my study and get all the office equipment back up and running. At least my back up system worked and I was able to save all my research over 30 years worth.
If your William Ralston served in the 71st Frazer Highlanders in 1778 how long did he have to serve to make Corporal ?. I have a William Henry Ralston b 1751 died 11/07/1833 at Warwickhill buried in the Kilmarus Churchyard. His sister Margaret was to marry Duncan McDougal yet a generation later Esq Alexander McDougal Ralston inherited Warwickhill his son was Major General William Henry Ralston his grandson was Col William Henry Ralston 1883 -1962 DSO, MC, OBE died in Rhodesia.
Hope this helps?