I'm researching Gardners. 
Margaret Gardner, my 2 x gt grandmother, was born abt 1837, Richhill, Armagh, daughter of Singleton Gardner, a blacksmith. 
He had other children Thomas (married Ann Jane Welsh nee McNally), Singleton, Jane (married Robert Harvey) and Matilda (married Thomas Holland). 
I have know idea who Singleton married. I believe he was the son of Singleton Gardner and Margaret Livingston.