McDermott Surname: Origin and Coat of Arms
What does McDermott mean, and where does it come from? Here is a brief introduction.
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Origin of the McDermott name
McDermott comes from Mac Diarmada, "son of Diarmaid", a personal name of uncertain meaning, often explained as "free of envy". The MacDermots were lords of Moylurg in north County Roscommon, a branch of the same Síol Muireadhaigh stock as the O'Conor kings of Connacht. Their stronghold stood on an island in Lough Key, near Boyle. The name is still common in Roscommon, Sligo and across Connacht.
Our historical archives hold much more on the McDermott name: dates, names and records of early bearers.
This overview covers the McDermott name in Ireland. We also hold records of the name in other countries, such as the United States, England and Australia; your full pack is researched for your family's country of origin.
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Your full McDermott pack adds the researched history, early records and migration. Order your pack and our heraldry team researches and paints the McDermott coat of arms for you.
McDermott name FAQ
What does the McDermott name mean?
Son of Diarmaid. Common variants include MacDermot, McDermot, Dermody.
Where does the McDermott surname come from?
It originates in Ireland, and is also found in the United States, England and Australia.
Is there a McDermott coat of arms?
Arms were granted to individuals, not whole surnames, so there is no single McDermott crest. Herald Lab paints a personalized McDermott coat of arms based on historic heraldry.
Researched by Herald Lab Research Studio, since 1993. Sources: MacLysaght, The Surnames of Ireland; Dictionary of American Family Names (Oxford).