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Gender: M Meaning of Brennan: "descendent of the sad one" Origin of Brennan: Irish Brennan's Popularity in 2015: #446

Brennan is a winning Irish surname name, more modern than Brian or Brendan, more unusual than Conor and Aidan. The only possible problem with Brennan: people might think you're saying Brendan.

Brennan eased onto the very bottom of the popularity list in 1966, and has pretty much remained in the Top 1000 ever since, now at Number 446.

Famous People Named Brennan

Brennan Kerwin (b. 1995), son of Brian Kerwin & Jeanne Marie Troy
John Owen Brennan, CIA director
William Brennan Jr., United States Supreme Court Justice
Shane Brennan, producer of show "NCIS" and creator/producer of show "NCIS: Los Angeles"

Pop Culture References for the name Brennan

Ray Brennan, from TV series "Las Vegas"
Brennan Huff, character on the film "Step Brothers" played by Will Ferrell
Dr. Temperance Brennan, main character on the television show "Bones"

Brenan, Brennen, Brennin, Brennon, Brenyn