My ancestors were Ryans, Daverns and Breens from Co. Tipperary, residing in various small townlands, including Ballybrack. The landlord for many of them, before the Famine, was Edward Bagwell-Purefoy. I did a little bit of research on him (I kept no notes, unfortunately, but it would have all been on the internet, mostly through ancestry.com) and found the following:
Edward Bagwell was born about 1816 at Greenfields, Tipperary, to a landed gentry family. He was educated at Harrow. He obtained a commission as a lieutenant in the 3rd Dragoon Guards, then as a captain in the 4th Hussars, and finally as Lieutenant Colonel of the Tipperary Artillery Militia. He assumed the additional surname of Purefoy by royal license in 1847 “in compliance with the will of William Purefoy, Esq. Of Greenfield.” He was appointed High Sheriff in 1856, and later was appointed Vice Lieutenant of the County. He was a member of the Kildare Street Club, Dublin.