High Quality Content by WIKIPEDIA articles! Twin brothers Ronald "Ronnie" Kray (24 October 1933 – 17 March 1995) and Reginald "Reggie" Kray (24 October 1933 – 1 October 2000) were English gangsters who were foremost perpetrators of organised crime in London`s East End during the 1950s and `60s. Ronald, commonly referred to as Ron or Ronnie, most likely suffered from paranoid schizophrenia.