18 year old Edward Redman will be sentenced for the murder of 17 year old Jay Whiston on Thursday 1st May.
Jay was stabbed to death at a party on Colchester in 2012.
Edward Redman was found guilty of murder after a three month trial at Chelmsford Crown Court.
His 51-year-old father, Gary Redman; his 20-year-old brother, John Redman; and his former girlfriend, 19-year-old Shannon Fenlon were all found guilty of conspiring to pervert the course of justice.
They were all remanded into court custody prior to their sentencing.
More top news
A £10m pound scheme to tackle flash flooding in Norwich begins today.
Tonight will be chilly with lows of 3 deg C ( 37 deg F ) but tomorrow will be generally fine and sunny.
A man has been left with life-changing injuries following a crash in Essex in which five people were hurt.