Floyd Mayweather Jr Family Tree: The Story Behind Boxing's 50-0 King

Floyd Joy Mayweather Jr., born 24 February 1977 in Grand Rapids, Michigan, USA, is an American former boxer — 50-0 (undefeated); world champion across 5 weight classes (super feather, lightweight, super light, welter, super welter); Forbes highest-paid athlete multiple years; Ring Magazine No. 1 pound-for-pound for years.

The Family's Roots: A Grand Rapids Boxing Family

Father, uncle, and grandfather all pro boxers.

His Parents

Father: Floyd Mayweather Sr., b. 19 October 1952 — former welterweight boxer; Floyd Jr.'s trainer.

Mother: Deborah Sinclair — American; drug issues in her youth.

His Uncles (both boxers)

Roger Mayweather (1961–2020) — WBA lightweight champion; trainer.

Jeff Mayweather — pro boxer; trainer.

His Ex-Fiancée: Josie Harris

Josie Harris (1979–2020) — American; long-time fiancée; died 9 March 2020 at 40 (drug overdose).

Their Children

Koraun Mayweather, born 1999 — son.

Zion Mayweather, born 2001 — son.

Jirah Mayweather, born 2003 — daughter.

His Other Daughter

Iyanna "Yaya" Mayweather, born 20 May 2000 — daughter with ex Melissa Brim; rapper.

The Mayweather Family Tree at a Glance

Father: Floyd Sr. (b. 19 October 1952) — trainer.

Mother: Deborah Sinclair.

Uncles: Roger (1961–2020); Jeff.

Ex-Fiancée: Josie Harris (1979–2020).

Children (Josie): Koraun (b. 1999); Zion (b. 2001); Jirah (b. 2003).

Daughter (Melissa Brim): Iyanna (b. 20 May 2000).

Marital Status: Never married.

Floyd Mayweather Jr.:

  • Born 24 February 1977, Grand Rapids
  • 1996 Olympic bronze (Atlanta)
  • Turned pro 11 October 1996
  • World titles: 15+ across 5 weight classes
  • 50-0 (27 KO) — never lost as a pro
  • Ricky Hatton, Oscar De La Hoya, Manny Pacquiao (2015), Conor McGregor (2017): all defeated
  • Pacquiao "Fight of the Century": 2 May 2015 — Mayweather won unanimous decision
  • Career purse: $1.5B+; Forbes highest-paid athlete 2012, 2014, 2015, 2018

What the Mayweather Family Story Teaches Us

A boxer-trainer father. Two boxer uncles. A fiancée lost tragically at 40. Four children by two women. Never married. A career of 50 fights, 50 wins, and boxing's highest career earnings.

For every family — large or small, famous or otherwise — the Money story carries the same lesson. Some careers stay undefeated across 5 weight classes.

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