Thanks once again for all the info. The one niggle I had was that Martin Stewart was baptised as a Catholic whereas the rest of the family seemed to be Presbyterian/Church if Ireland. But I notice on the igp-web summary of RIC service for those enlisting with the native county of Limerick that Martin Stewart is listed as 'P' = Protestant. (My subscription to Findmypast ran out just before Christmas - typical...) Perhaps George was Protestant and Bridget, Catholic. Lots of info for me to get to grips with.
I'm George Martin Stewart's G. G. Grandson, in all honesty we don't know very much about his life in Ireland. He came to New Zealand as a Taranaki Settler Soldier from Doon, Limerick County in the 1860s, we weren't aware that he may have been married in Ireland and we were lead to believe he was born around 1840. He was married twice here in New Zealand. My Grandfather was lead to believe that our family had always been Catholic. He sadly past last year so I won't be able to help you with more information pertaining to the reasoning behind Martin's catholic baptism.