Drennan Surname Guide

People named Drennan share an Irish surname with a long history. Elsdon Smith's dictionary of American family names explains it as “grandson of Draighnean (blackthorn)”. Related forms include Drennen.

4,233 Americans were listed as Drennan in the 2010 census.

A coat of arms was granted to a particular family line, not to everyone named Drennan, so a shared surname is a clue rather than a claim to the arms. For the full story, order the Drennan surname pack.