MacCarthy MacCarthy MacCarthy (Irish: Mac Cárthaigh), also spelled Macarthy, McCarthy or McCarty, is a Gaelic Irish clan originating from Munster, an area they ruled during the Middle Ages. It was and continues to be divided into several great branches. The MacCarthy Reagh, MacCarthy of Muskerry, and MacCarthy of Duhallow dynasties were the three most important of these, after the central or MacCarthy Mór line. Their name, meaning "son of Cárthach" (whose name meant "loving"), is a common surname that originated in Ireland. As a surname, its prevalent spelling in the English language is McCarthy. Several variants are found, such as McCarty
Keller (surname) Munster. The Anglicized surname in Ireland has many different spellings including: O'Kelleher, Kelaher, Kelliher, Kellar, Keller, McKeller, MacKeller, and O'Keller. People whose surname is or was Keller include: Keller (surname) Keller is a surname with several origins. The Irish version, which is the most ancient in origin, comes from the Gaelic surname Ó Ceilechair. In modern German Keller means cellar or basement, but historically it designates a cellarer or winemaker. A Latinized form of "Keller" is "Cellarius". Keller is an Anglicized version of the Old Irish surname Ó Céilechair (meaning descendant of Céilechair). Céilechair was descended from Cennétig mac Lorcáin