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
Kennedy (surname) Kennedy (surname) Kennedy, alternately O'Kennedy and Kennedie, is a surname of Irish and Scottish origin that has also been used as a given name. There have been several different etymologies given for the surname. One is that the name is an Anglicisation of "Ó Cinnéide", meaning "grandson of "Cinnédidh"" or "grandson of "Cinnéidigh"", with both of these personal names meaning "helmet headed." "Ceanéidigh" could be related to the old Gaelic name "Cennétig", which is known from Cennétig Mac Lorcáin, the father of the Irish high king "Brian mac Cennétig", who himself was also known as "Brian Bóruma" or Brian Boru.