Question:  Ambrose Mendy (born August 1954) is a British boxing manager, advisor and sports agent, he has managed and/or advised Errol Christie among others during a career in boxing, he was a professional boxer and boxing trainer, of which nationality?

Context paragraphs:
Johnny Pritchett: Johnny Pritchett (born 15 February 1943) is an English amateur welterweight and professional light middle/middle/light heavyweight boxer of the 1960s and '70s, and boxing manager of the 1970s and '80s, who as an amateur won the Amateur Boxing Association of England (ABAE) 1959 Junior Class-A title against B. Ford (St Peters ABC), boxing out of Bingham & District ABC, won the 1962 Amateur Boxing Association of England welterweight title, against Harry Dean (Oxford YMCA), boxing out of Bingham & District ABC, won the 1963 Amateur Boxing Association of England welterweight title, against Ralph Charles (West Ham ABC), boxing out of Bingham & District ABC, and represented England and won the silver medal at welterweight in the Boxing at the 1962 British Empire and Commonwealth Games in Perth, Australia, losing to Wallace Coe of New Zealand, and as a professional won the British Boxing Board of Control (BBBofC) British middleweight title, and British Commonwealth middleweight title, and was a challenger for the European Boxing Union (EBU) middleweight title against Juan Carlos Durán, his professional fighting weight varied from 153+1/4 lb , i.e. light middleweight to 162+1/2 lb , i.e. light heavyweight.  Johnny Pritchett managed; Dave Needham, Howard Hayes, Johnny Cheshire, and Dave Symonds.

Errol Christie: Errol Christie (29 June 1963 – 11 June 2017) was an English professional boxer and boxing trainer.  He was the captain of the English amateur boxing team from 1980 to 1983 and European amateur champion in 1983.  After turning professional he was a regular fixture on "ITV Fight Night" in the 1980s.  After retiring from boxing he became a trainer in white-collar boxing.

Carl Crook: Carl Crook (born 10 November 1963 in Bolton) is an English amateur lightweight and professional light/light welterweight boxer of the 1980s and 1990s, who as an amateur was runner-up in the 1985 Amateur Boxing Association of England (ABAE) lightweight title, against Edmond McAuley (Hogarth ABC), boxing out of Chorley ABC, and as a professional won the British Boxing Board of Control (BBBofC) Central Area lightweight title, BBBofC British lightweight title, and Commonwealth lightweight title, and was a challenger for the EBU (European) lightweight title against Antonio Renzo, and Jean Baptiste Mendy, his professional fighting weight varied from 132 lb , i.e. lightweight to 137 lb , i.e. light welterweight.

Kenny Adams: Kenneth "Kenny" Adams (born September 25, 1940) is an American professional boxing trainer and a former amateur boxer.  Adams is a highly respected boxing trainer, having been inducted into the Missouri Sports Hall of Fame in 2010.  Adams is a pioneer in boxing, having been the first American trainer to implement strength training.  He is also the first African-American selected as head coach of the American national boxing team.  Adams brings such a strict disciplinarian training style that the eight-time, five-division World champion Floyd Mayweather, Jr. refused to work with him.  In 1999, the multiple-time World champion Wladimir Klitschko asked Adams to assist him in properly turning over his fist on the left hook for power.  In 2005, eight-division World champion Manny Pacquiao requested to train with Adams, but Adams declined to aid to his ill wife at the time.

Gary De Roux: Gary De'Roux (born 4 November 1962) is a retired former professional boxer, boxing trainer, manager and British Boxing Board of Control Ltd Inspector.

Lee Beard: Lee Beard (born 1975 in Salford, England) is a British boxing trainer.  He is most well known for his work as assistant trainer to Ricky Hatton.  He was also the trainer of Ricky's younger brother Matthew Hatton.  When his trainer died, Beard took over the running of his gym at the age of 27.  Beard trained in Taekwondo and kickboxing before becoming a boxing coach.

Ambrose Mendy: Ambrose Mendy (born August 1954) is a British boxing manager, advisor and sports agent.  He has managed and/or advised Nigel Benn; James DeGale; Chris Eubank Junior; Lloyd Honeyghan & Errol Christie among others during a career in boxing that started in the late 1970s.

Kaliesha West: Kaliesha West is a professional female boxer and the former 3 time WBO Female Bantamweight and IFBA super Bantamweight Boxing World Champion.  She is the first professional boxer in history, between both male and female, to become a World Champion from Inland, CA.  She was born on February 11, 1988, in South Haven, Michigan.  West currently resides in Moreno Valley California, a small suburb between Riverside and Palm Springs.  West is a Motivational Speaker and implements her courage on being a Women's Right's advocate for Women's Boxing.  She shares her passionate beliefs that equal opportunities for female fighters should be given to those who have worked hard, and accomplished the greatest of challenges in their profession whether male/female.  On September 18, 2010, West won the WBO title, becoming the first world boxing champion from the Inland Empire. (Between men and women) Her father, Juan West, is her boxing trainer and manager.  She was also a contestant on the CW reality show "Capture", she placed 4th out of 12 teams.  Currently, West is delivering her voice through social media networks, campaign, and protests across the United States in hopes to generate a following from those who believe in equal opportunities for women's boxing.  Some compare her representation in the sport of Women's Boxing to that of Billie Jean King.

Martin Ward: Martin Ward ( (1988--) 11 1988 (age (2017)-(1988)-((11)<(03)or(11)==(03)and(30)<(11)) ) ), born in West Rainton, is an English professional Bantam/Super bantam/Feather/Super featherweight boxer who has won the British Boxing Board of Control (BBBofC) English bantamweight title, and Commonwealth bantamweight title, and was a challenger for the British Boxing Board of Control (BBBofC) British bantamweight title against Lee Haskins, the International Boxing Federation (IBF) world bantamweight title against Stuart Hall, and the British Boxing Board of Control (BBBofC) British super bantamweight title against James Dickens.  His professional fighting weight has varied from 117 lb , i.e. Bantamweight to 132 lb , i.e. Super featherweight.

Adam Flores: Adam Flores Cruz (born August 27, 1970) is a retired Mexican/American professional boxer, Trainer, Manager in the Heavyweight division and actor in the film "Snake Eyes".  Flores was a member of the 1996 Mexican Olympic Selection team that went on to compete in the 1996 Olympic Box offs in Halifax, Canada and was trained by world renown Boxing Trainer Eduardo García at La Colonia Boxing Club.

Supporting paragraphs: Ambrose Mendy Errol Christie
Answer: English