The data I gave in the quote is family information taken from old bibles, etc. that has not been authenticated. That same family folklore names my Paul family as originating in Ballymena, County ANTRIM, so that should be correct (and there's only one Ballymena in Antrim as far as I know). I saw the other Ballymenaghs and the numerous Pauls, McAuleys and Blairs in Aghadowey parish in Griffiths Valuation and started to second guess myself.
My Great Grandfather Moses Blair Paul was born June 1, 1851 in Ballymena and emigrated with his parents and older siblings to Canada in 1852. I cannot find the baptism in the online databases (maybe they are not complete, yet). The family was definitely of the Presbyterian faith.
Thanks for your comments/ help.