William Jones had been looking for his former girlfriend and her new partner when he kicked the door of Mr Lewis' flat in Claude Road, in the Roath area of Cardiff, in the early hours of 28 April 2012.
Mr Lewis came to the front door and was stabbed, later dying of his injuries in hospital. The pensioner had a learning difficulty and a number of physical impairments, including blindness in one eye and arthritis.
More top news
Wales head coach Rob Howley admitted his side's performance 'simply wasn't good enough' against Scotland this afternoon.
It will be cloudy with outbreaks of rain at first, but most of the rain will clear by morning.
Despite leading at half time, Howley's men failed to score in the second half with Scotland racking up 20 points to seal the win.