Conor McGregor Family Tree: The Story Behind The Notorious

Conor Anthony McGregor, born 14 July 1988 in Dublin, Ireland, is an Irish MMA fighter — first fighter in UFC history to hold titles in two weight classes simultaneously (featherweight 2015; lightweight 2016); 22-6 MMA record; Forbes highest-paid athlete 2021 ($180M).

The Family's Roots: A Dublin Working-Class Family

The McGregor family is from Crumlin, Dublin, Ireland.

His Parents

Father: Tony McGregor — Irish; taxi driver.

Mother: Margaret McGregor — Irish.

His Sisters

Erin McGregor, born 1980 — reality-TV personality.

Aoife McGregor — sister.

His Partner: Dee Devlin

Dee Devlin — Irish. Together with Conor since 2008. Engaged 2020.

Their Children

Conor Jack McGregor Jr., born 5 May 2017 — son.

Croia McGregor, born 4 January 2019 — daughter.

Rian McGregor, born 12 May 2021 — son.

Mack McGregor, born August 2024 — son.

The McGregor Family Tree at a Glance

Father: Tony McGregor — taxi driver.

Mother: Margaret McGregor.

Sisters: Erin (b. 1980); Aoife.

Fiancée/Partner: Dee Devlin — from 2008.

Children: Conor Jr. (b. 5 May 2017); Croia (b. 4 January 2019); Rian (b. 12 May 2021); Mack (b. August 2024).

Conor McGregor:

  • Born 14 July 1988, Dublin
  • Plumber apprentice; started training MMA age 12
  • Cage Warriors 2008-13 (2 titles simultaneously)
  • UFC debut: April 2013
  • UFC Featherweight Champion: 12 December 2015 (13-sec KO of Aldo)
  • UFC Lightweight Champion: 12 November 2016 (beat Eddie Alvarez — first two-weight simultaneously)
  • Mayweather boxing: 26 August 2017 — lost TKO R10 (grossed $600M+)
  • Khabib loss: 6 October 2018 (submission R4)
  • Career: 22-6 MMA
  • Not fought MMA since July 2021 leg break vs Dustin Poirier
  • Proper 12 Whiskey — sold portion for $600M (2021)
  • Multiple assault allegations/convictions

What the McGregor Family Story Teaches Us

A taxi-driver father. Two sisters. A partner of 17 years with 4 children. A career that made an Irish plumber apprentice into the UFC's first simultaneous two-weight champion — and Forbes' highest-paid athlete for a year.

For every family — large or small, famous or otherwise — the Notorious story carries the same lesson. Some careers cross a Dublin plumbing apprenticeship to Forbes' No. 1.

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