Judge William Davis QC said: "People who break people's jaws in this kind of mindless violence normally go to prison but I take a view that because of his extraordinary position it is right to suspend sentence."
Addressing Jahan, he added: "There is in your case this extraordinary combination of events. For that reason and that reason alone I can suspend the sentence.
"Ordinarily this would mean that you would go to prison for 12 months but this all happened last July and in August, as everybody in this court knows, you suffered the loss of one of your sons, which was desperate in itself."
More top news
Shivering with sunny skies this Saturday
The regional government has passed a law prohibiting the organisation and promotion of pub crawls.
The Royal Newfoundland Constabulary said its officers were on call and available to respond to emergencies in St John’s.