Last Names

Surnames / M

McDermott

What is the origin of the last name McDermott?

Irish originPatronymic (from a parent or ancestor)Rank #1,151 in the US

Meaning and origin

The last name McDermott is of Irish origin and is derived from the Gaelic surname Mac Diarmada, which translates to "son of Diarmuid." Diarmuid, in turn, comes from the Irish elements "diarmaid," meaning "free from envy," and "díomus," meaning "envy." The McDermott surname can be traced back to the ancient and influential family of Diarmuid Mac Murrough, who was a king of Leinster in the 12th century and played a significant role in the Norman invasion of Ireland.

The longer story

The last name McDermott, originating from Ireland, holds historical significance and a rich etymology that can be traced back centuries. McDermott is an anglicized version of the Gaelic surname Mac Diarmada, which means "son of Diarmaid."

This surname carries connections to Irish mythology and history. He was known for his bravery, intelligence, and loyalty, making the name McDermott a testament to these qualities.

The McDermott clan was part of the ancient kingdom of Connacht and held prominence in County Roscommon. They were leaders, chieftains, and warriors, and their influence extended throughout the region. The surname, therefore, signifies a connection to a noble and distinguished lineage.

Surname origins are rarely settled: one spelling can have several sources, and families often took a name for reasons nobody wrote down. Check it against the sources below before you rely on it.

Similar spellings

#1,151

McDermott was the 1,151st most common surname in the 2010 US Census, with 30,528 people, about 10 in every 100,000.

Who carries it

  • White (non-Hispanic)92.2%
  • Hispanic or Latino2.7%
  • Black (non-Hispanic)2.6%
  • Asian or Pacific Islander0.8%
  • Two or more races1.4%
  • American Indian or Alaska Native0.3%

Where it is found

Countries linked to McDermott.

Surnames like McDermott

Names it is linked with, then names with the same origin and a similar standing.

Check the sources

For a name you are serious about, compare the dictionaries: Reaney and Wilson, A Dictionary of English Surnames; Hanks, Dictionary of American Family Names.