Beatty, Betty
Beatty, Betty—In the districts of Enniskillen and Lisnaskea, in South Fermanagh, the name McCaffrey has been anglicised Beatty and Betty (Mac Gafraidh). Beattie and Beatty is a surname common to the ancient province of Galloway, Scotland, in Gaelic Mac A' Bhiadhtaigh, and further anglicised McVitty and McWatty, the surname Watson and Watts being written likewise in Gaelic. See Watson.
Alphabetical Index of Anglicised Surnames in Ireland
See also Woulfe’s Irish Names and Surnames
… and O'Hart's Irish Pedigrees