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?
Sentence (from "Errol Christie"): Errol Christie (29 June 1963 – 11 June 2017) was an English professional boxer and boxing trainer.
Relevant evidence: Yes