Career
He represented 3rd Queens in the Legislative Assembly of Prince Edward Island from 1911 to 1915 as a Conservative member. He was born in New Perth, Prince Edward Island, the son of Robert Dewar and Jessie Dewar. there in 1893. He set up practice in Southport.
Dewar was elected in an 1911 by-election held after Herbert James Palmer was named premier and so was required to run for reelection.
As a result of Palmer"s defeat, the Liberals lost their majority in the assembly and a new general election was held later that year.