McLaughlin (surname) McLaughlin (surname) M(a)cLaughlin is the most common English form of "Mac Lochlainn", a masculine surname of Irish origin. The feminine form of the surname is "Nic Lochlainn". The literal meaning of the name is "son of "Lochlann"". Note that "Mc" is simply a contraction of "Mac", which is also (albeit rarely) truncated to "M' ". Thus, "MacLaughlin", "McLaughlin" and "M'Laughlin" are the same Anglicism, the latter two merely contractions of the first. The original surname Mac/Nic Lochlainn was borne by a family of Cenél nEógain, a branch of the historic northern O'Neill dynasty, reputedly founded by Niall Noígíallach. This family
Mongan (surname) Mongan (surname) Mongan is an Irish surname anglicised. It derives from the ancient and possibly pre 10th century Gaelic Ó Mongáin ‘descendant of Mongan’. The latter was a nickname for the original chief of the clan, who presumably had a particularly luxurious or wild growth of hair. Many, perhaps the majority of Irish Gaelic surnames were nicknames for the original chief or leader, see Mongán mac Fiachnai this is a good example. The derivation is 'mong', meaning long-haired. Three branches of this clan originally existed in ancient Ireland. These were a sept in Ulster which gave its name to the