During World War I, when the sale of alcohol was prohibited, he went into the grocery business with a Mr. Clancy.
[1] He represented the Newfoundland assembly in the 1926 visit to Australia by the Empire parliamentary delegation.
[1] In 1877, Sinnott, never having built anything previously, constructed a whaleboat, the Placentia, for the Royal St. John's Regatta on Quidi Vidi Lake.
The men had carried the boat on their shoulders along the 145 km (90 mile) trail from Placentia to St. John's, leaving on Saturday night and arriving on the Wednesday morning before the regatta.
The crew, known as "The Seven Placentia Giants", was inducted into the Regatta's Hall of Fame in 1987.