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Of Welsh and Irish origin.

From Welsh words “tref”, meaning village, and “mawr”, meaning large.

It was used as a surname in the form of “Trefor”.

When of Irish origin, it derives from Gaelic “Ó Treabhair”, meaning prudent, tight.

Variant is Trev.

Famous bearers are Trevor Noah, Trevor Eve, Trevor Moran, Trevor Howard, Trevor Jackson, Trevor Morgan, Trevor Donovan, Trevor Bayne.