Darren Selwood, 34, was the last to be sent to jail after being handed a 15-month sentence at Maidstone Crown Court for stabbing a friend who asked to share his steak dinner.
His younger brother Lee, 31, and mum Lesley were both sent to prison for affray three weeks ago.
The court heard last month that Darren of Edna Road, Maidstone, refused to share his steak at a party in Turner Road, Tonbridge in July and instead stabbed his friend Patrick Boylan in the stomach with a steak knife.
In 2013 Darren, Lee and Lesley were locked up for launching a vicious joint attack on one of their neighbours after a car was torched in Chatham.
Mrs Selwood and her son Lee have since re-offended and are back in jail for fighting in public after being sentenced on November 18.