Andrew Jennings was the second son of Andrew Jennings [1793-1869], North Street, Newry, County Down, and his wife Mary Anne Clarke, daughter of Edward Clarke.
He was baptised in Newry.
Aug 2nd, 1829. Andreas Gennings Fr. Andrie and Maria Anna Clarke Sp. Joanni Caraher and Eliza Clarke. Andrew Gennings of Andrew and Mary Anne Clarke, 1829, sponsors John Caraher and Ellen Clarke.
He may have joined H.M Customs, but further research is needed to confirm this.