What is the surname Murphy translated to in Irish?

The surname Murphy is a direct translation of the Irish surname Ó Murchadha.

Here's a breakdown:

* Ó: This is the Irish equivalent of the English "O'" or "Mac," indicating descent from a specific ancestor.

* Murchadha: This is the Irish name for the ancestor, which means "sea warrior" or "sea defender."

So, Ó Murchadha literally translates to "descendant of Murchadha."