A man has been found guilty at Chelmsford Crown Court of the murder of 26-year-old musician Thomas Brittain from Colchester.
18-year-old Jack Hummerstone of no fixed address has been found guilty of murder and GBH with intent.
19-year-old Andre Vella from Kirby Cross was cleared on both these counts.
Both men pleaded guilty to possession of an imitation firearm with intent to commit a criminal offence. They were further charged with aggravated burglary, to which Hummerstone pleaded guilty and to which Vella was found guilty.
They will be sentenced in two weeks.
Thomas Brittain was found stabbed to death in Colchester in March 2013.
Det Insp Anne Cammeron, Senior Investigating Officer said, "This was a planned and callous violent attack on a defenceless family and particularly Tom. Tom's family have lost a much loved brother and son."