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Last Name Mckay

What is the origin of the last name Mckay?

The surname McKay originates from Scotland and Ireland, specifically the Gaelic Mac Caoimh, meaning "son of Cormac" or "descendant of Cormac." In Scotland, it is primarily associated with the Highland clans of Clan Chattan and Clan MacPherson. Over time, variations such as McKay, MacKay, and MacKey have arisen due to differences in spelling and translation.

Learn more about the origin of the last name Mckay

The meaning and origin of the last name Mckay

The surname McKay is of Scottish Gaelic origin, derived from the personal name Mac Caoilte or Mac Cait, both meaning "son of Cait/Kate." The prefix "Mac" is a common Scot-Gaelic patronymic, indicating that the original bearer was the son of someone named Cait or Kate. Over time, the spelling evolved to McKay, with the "k" replacing the more traditional "c" in Scottish Gaelic names due to the influence of Old Norse and Middle English. The McKays are a Highland Scottish Clan, originating from the lands around Lochaber in the western Highlands. The clan's history is deeply intertwined with that of Scotland, participating in significant historical events such as the Jacobite risings of the 18th century. Today, the McKay name can be found among the Scottish diaspora worldwide.

Geographical distribution of the last name Mckay

The surname McKay is predominantly found in Scotland and Ireland, with significant concentrations in these regions historically. In Scotland, it originated from the Gaelic Mac Aodh or Mac Eathach, meaning "son of Aodh" or "son of Ethne." Some clans bearing this name include Clan MacKay of Strathnaver and Clan Mackay of Fife. In Ireland, McKay is a variant of the Irish O'Neill (O Nualláin) clan. Over time, many individuals with the surname McKay emigrated from Scotland and Ireland to other parts of the world, particularly to North America. Today, large numbers of McKays can be found in Canada, the United States, Australia, and New Zealand, reflecting these historical migration patterns.

Variants and spellings of the last name Mckay

The surname McKay has multiple variations and spellings, largely due to differences in transcription and regional dialects over time. Here are some of the most common versions:

1. McKay - This is the most common spelling and is believed to have originated from the Gaelic Mac Aodha or MacAoidh meaning "son of Aodh" (pronounced 'O' and 'v' as in Scottish Gaelic).
2. Mc Kay - Occasionally, the apostrophe before the 'K' is omitted, although this is less common.
3. Mackey - This is an anglicized version of the original Gaelic spelling and is also a variant of McKay, sometimes used by families who Anglicized their name to blend in with English society.
4. MacAy - A less common variation that maintains the 'Mac' prefix but changes the 'K' to 'Ay', reflecting the phonetic pronunciation of the Gaelic name.
5. McKaye - This spelling is found among families who have Americanized their surname over time, with the 'e' at the end serving as a standard English suffix for surnames ending in consonants.
6. MacKay - Another anglicization of the original Gaelic name, this version replaces the 'C' with 'K', reflecting changes in pronunciation and spelling over time.
7. M'Kay - A rare Scottish variant that retains the inverted commas before the surname, which were once used to indicate the presence of a 'Mac' prefix in older manuscripts.

Famous people with the last name Mckay

Notable individuals with the last name McKay include:

1. John McKay (1934-2008), an American football coach who led the University of Southern California (USC) to two national championships and is a member of both the College Football Hall of Fame and Pro Football Hall of Fame.

2. James D. McKay (born 1935), an American astronaut who served as a payload specialist on NASA's first reusable Spacelab flight in 1985.

3. Roseanne McKay (fl. 1970s–present), a Canadian artist known for her large-scale sculptures and installations, with works featured in various public spaces across Canada.

4. Norman McKay (1866-1952), a Scottish-born architect who designed numerous buildings in New Zealand, including the Parliament Buildings in Wellington.

5. Maureen McKay (fl. 1970s–present), an American anthropologist and bioarchaeologist who has made significant contributions to forensic anthropology, particularly in the field of human identification.

Genealogical research on the last name Mckay

The surname McKay, originating from the Gaelic Mac Caoimh, meaning son of Caoimh (meaning 'devotee to Nollaig, or Nicholas'), is predominantly found among Scottish and Irish populations. The name is an anglicized form of several different original Gaelic names. In Scotland, it primarily originated from the Gaeltacht region in Argyll, but spread across the Highlands and Islands due to clan migrations. The Clan MacKay, one of the historic Scottish clans, was powerful during the Middle Ages and is still active today. In Ireland, McKays are mainly found in counties Donegal and Mayo, where they arrived as a result of 15th-century Scottish invasions. Notable figures with the surname include Sir William Alexander, the first Earl of Stirling, a prominent Scot in early Canadian history; and American actress Maureen O'Hara, born Maureen FitzSimons but often professionally known by her stepfather's last name, McKay.

Last name distribution maps

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Sources & References

About the author :
NomOrigine Team
NomOrigine Team
Passionate about genealogy, name history, and linguistics, we have been analyzing the origins of names for over 3 years. Our content is based on verified historical, etymological, and statistical data.
Last updated : 28 July 2025

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