A paedophile allegedly murdered as he “boasted” about his conviction for child rape had abused another youngster in the 1980s, it has been revealed. Jurors have heard that pensioner William Rowe, who was jailed in 2012 for multiple sex offences, had also been convicted in 1984 for indecently assaulting a child. Mr Rowe, 71, died in September last year after being subjected to what the prosecution say was a “brutal” attack by Simon Brown at the home of a mutual female friend in Mercury Close, Borstal. Brown, 28, told police following his arrest that he lost his temper and “went mad” when the se…