Mac Cuilinn
MacCuillinn or Mac Cuillann is an Irish surname. The name is the patronymic form of a personal name derived from cuileann. The name has become Anglicised as MacCullen & McCullen, and MacQuillan & McQuillan. The name appears in Irish mythology. The family are thought to have been Celtic Kings between the 5th and 12th century.
Saint Macculind was an early Irish saint who was abbot or bishop of Lusk.