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What does the 'Mac' prefix mean in surnames?
The prefix "Mac" in surnames comes from Scottish and Irish Gaelic and means "son". It is similar to the Anglo-Norman and Hiberno-Norman "Fitz" and the Welsh "Ap".
Many "Mac" names come from a Christian name, like Mac Aonghusa, which is now MacAinsh or MacGuinness, names that are derived from Angus. Some of the most well-known "Mac" names include Norse forenames, such as the Scottish MacCorquadale, the Irish MacManus, and the Irish MacLoughlin.
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Which regions or cultures commonly use the 'Mac' prefix in last names?
The prefix "Mac" in surnames typically signifies "son of" in Scottish and Irish Gaelic cultures. These cultures were among the first to adopt hereditary surnames, with the practice beginning in Ireland in the 11th century.
The "Mac" prefix is commonly found in both Scotland and Ireland; however, in Ulster, Mac names are more prevalent due to the settlement of numerous families of Scottish origin starting in the early 17th century. While "Mac" is generally retained in Scotland, it was often dropped in Ireland during the Gaelic submergence in the 18th century but has been increasingly revived since the 1890s.
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How does 'Mac' change the meaning of a surname?
The prefix "Mac" in a surname means "son of" in Scottish and Irish Gaelic. It's similar to the Anglo-Norman "Fitz" or the Welsh "Ap".
"Mac" typically combines with a given name to create a surname, such as Mac Aonghusa, which evolved into MacAinsh, MacInnes, MacNeish, MacGuinness, and Macguire. Some Mac names include Norse or Norman names, like MacManus or MacCostello. The prefix Mac is generally retained in Scotland, but in Ireland, it was widely discarded, although many have resumed using it since the 1890s.
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What is the difference between 'Mac' and 'Mc' in surnames?
The abbreviation Mc is simply a shortened form of the Gaelic prefix Mac, which means "son." Both Mac and Mc are used in Scottish and Irish surnames and there is no real difference between them.
The idea that Mc is Scottish and Mac is Irish (or vice versa) is a fallacy. Both forms have been used indiscriminately.
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Can you give examples of surnames that use the 'Mac' prefix and explain their meanings?
The prefix "Mac" in Scottish and Irish surnames means "son". It's equivalent to the Anglo-Norman "Fitz" and the Welsh "Ap." Many "Mac" names come from Christian names, such as Mac Aonghusa (modern MacAinsh or MacGuinness), which comes from a forename anglicized as Angus.
Examples of surnames with the prefix "Mac" include:
* MacDuff, Duffie, and MacPhie These names all derive from dubh, which means "black".
* MacManus This name embodies Norse forenames.
* MacCostello This name embodies Norman names.
* MacDicken and MacRitchie These names are formed from modern Christian names.
* Macateer From mac an t-saoir, meaning "son of the carpenter".
* MacElroy, MacIlwaine, MacLennan, MacClellan These names use mac giolla, meaning "follower" or "devotee".2 Britannica SourcesCreated from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles. -
How has the use of the 'Mac' prefix influenced family names in Scotland and Ireland today?
The prefix Mac, meaning "son of," is a common component of surnames in Scotland and Ireland. While Mac names are prevalent in both countries, their usage and evolution have differed over time.
In Scotland, the Mac prefix has generally been retained in surnames. However, in Ireland, it was widely discarded due to the Gaelic submergence in the 18th century, though many families have readopted it since the 1890s. Today, Mac names are more numerous than O names in Ulster, largely due to the settlement of Scottish families in the region starting in the 17th century. The abbreviation Mc is used interchangeably with Mac, and both forms appear in Scottish and Irish names.
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Mac, Scottish and Irish Gaelic surname prefix meaning “son.” It is equivalent to the Anglo-Norman and Hiberno-Norman Fitz and the Welsh Ap (formerly Map). Just as the latter has become initial P, as in the modern names Price or Pritchard, Mac has in some names become initial C and even K—e.g., Cody, Costigan, Keegan.
The Gaelic countries were among the earliest to adopt hereditary surnames, their introduction in Ireland dating from the 11th century (with a few early ones in the 10th). A cursory examination of early medieval Gaelic records gives the impression that surnames in the modern sense were in use much earlier, because such personal names as Domhnall Mac Gormain occur continually. This name, however, does not in fact imply the existence of the surname MacGorman in the 9th century but merely indicates that this Domhnall (Donnell) was the son of a man whose Christian name was Gorman. Similarly, Dermot O’Tierney was simply Dermot the grandson of a man called Tierney (Ua, later shortened to O, means grandson or, more loosely, descendant).
Most names that contain Mac are formed from a Christian name, as is Mac Aonghusa (modern MacAinsh or MacGuinness, which both derive from the forename now anglicized as Angus). Many have been still farther removed from their original form by the substitution of the terminal -son for the prefix Mac—e.g., Ferguson. Several of the best-known Mac names embody Norse forenames—e.g., the Scottish MacCorquadale, the Irish MacManus, or Irish MacLoughlin (MacLachlan in Scotland). Later, Norman names were likewise incorporated—e.g., MacCostello—and in more recent times, especially in Scotland, surnames like MacDicken and MacRitchie have been formed from modern Christian names.
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Most English surnames are formed from trades, personal attributes, or places. The first two categories occur also in the Gaelic system, though less frequently. Instances are MacDuff, Duffie (and even MacPhie, all from dubh, “black”), and Macateer (mac an t-saoir, “son of the carpenter,” sometimes translated to give the surname Carpenter). Place-names, naturally, do not combine readily with Mac.
In Gaelic Scotland there are now relatively few O names. Ogilvie is a toponym (a place-name derivation). Usually -Gil- here is giolla, “follower” or “devotee” (usually associated with Christ or with the name of some saint—e.g., Gilchrist or Gilmartin). It is rare with O but frequent with Mac, as, for example, in MacElroy, MacIlwaine, MacLennan, MacClellan. There are numerous modern anglicized forms of names beginning in Gaelic with mac giolla—e.g., Mac Giolla Riabhaigh, which gives MacGillreavy, MacGilrea, MacElreavy, MacIlrea, MacAreavy, MacIlravy, MacElreath, MacIlwraith, Gallery, occasionally Kilgray, and even Gray, as well as other minor variants. Indeed, some of the more corrupt forms of such names bear little resemblance to their original: it is hard to recognize Mac Gtolla Bhrighde (“son of the devotee of St. Brigid”) in Mucklebreed (a synonym of MacBride in County Armagh). Meikleham for MacIlquham is a Scottish example of this.
MacAinsh, mentioned above, is an anglicized form approximating phonetically the original Gaelic Mac Aonghusa; in Scotland it has also become MacInnes, MacNeish, and MacQuinness, while in Ireland it is MacGuinness. This last name illustrates a tendency, particularly in Ulster, whereby Mac names followed by an initial G are contracted; thus MacGuinness (also written MacGennis) becomes Magennis, MacGuire becomes Maguire, and MacGee, Magee.
In Ulster Mac names outnumber O’s, largely on account of the number of families of Scottish stock which settled there from the time of the plantation of Ulster early in the 17th century. Elsewhere in Ireland O’s outnumber Mac’s, although in one western county (County Clare) the two most numerous names have historically been MacMahon and Macnamara. A Macnamara in that locality is invariably known colloquially as Mac, and children of Macnamara families were sometimes formerly registered as Mack. The same abbreviation occurs to a lesser extent in other counties for different Mac names.
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In Scotland the Mac prefix has been generally retained, but in Ireland, as a result of the Gaelic submergence in the 18th century, it was widely discarded, as was the cognate O. Thus Carthy was used for MacCarthy, Keogh for MacKeogh, and so on. It is interesting to note that since the 1890s these prefixes have been resumed to a considerable extent.
It was once a popular illusion that the bearer of a Mac name was Scottish (it is hard to know how it ever arose with names like MacMahon, MacCarthy, and MacDermot so common). Another fallacy has proven much more resilient, however: that the Mc form is Scottish and the Mac form Irish (sometimes the reverse is asserted). This is entirely without foundation. Both forms are used indiscriminately, Mc being, of course, simply an abbreviation of Mac, as is M’ (now nearly obsolete but once widely used).