Brennon
Meaning
a modern respelling of Brennan, from the Irish surname Ó Braonáin, descendant of Braonán
Popularity, 1890–2024
Shape drawn from US Social Security baby-name records. Brennon peaked in the 1990s and the 2010s in nearly equal measure.
See popularity in Brazil
Popularity in Brazil
39 people · the #78,870 first name in Brazil · median age 20
Source: IBGE, Censo Demográfico 2022
When you meet Brennon
Most people given the name Brennon in the United States are teenagers or young adults today.
Estimated from US Social Security birth registrations and typical lifespans; a rough guide, not a rule.
The Brennon deep dive
Whether you’re naming a baby or exploring your own name’s history, this is a personal letter, not a list: where Brennon truly comes from, how it traveled, and what a century of records reveals. If you have grown a tree on nametree, it also considers how Brennon fits with your family’s names and surname.
Does Brennon fit YOUR family?
nametree reads your family’s names and finds the ones that belong. Free, private, no ads.
Add Brennon to your family’s tree →