Well known real life Gay Gangster in the UK in 60's London (with his twin brother). He would ask his underlings to say how beautiful his latest boyfriend was and if they laughed or did not support him he would get them beaten up etc. A big tough Gay Gangster.
You're wrong. Black didn't have a boyfriend, unlike Ronnie Kray. Black suppressed his sexuality, so much so that he never touched anyone again after he was beaten up for being a 'faggot'.
BTW Have you seen 'Villain' (1971) with Richard Burton playing a character based on Ronnie Kray? Great underrated film it is.