John Alexander Dewar was a farmer and political figure on Prince Edward Island

Prince Edward Island

Prince Edward Island is a Canadian province consisting of an island of the same name, as well as other islands. The maritime province is the smallest in the nation in both land area and population...

. He represented 3rd Kings

3rd Kings

3rd Kings was an electoral district in the Canadian province of Prince Edward Island, which elected two members to the Legislative Assembly of Prince Edward Island from 1873 to 1993.The district comprised the western central portion of Kings County....

 in the Legislative Assembly of Prince Edward Island

Legislative Assembly of Prince Edward Island

The Legislative Assembly of Prince Edward Island, along with the Lieutenant-Governor, forms the parliament of the province. The General Assembly meets at Province House, which is located at the intersection of Richmond and Great George Streets in Charlottetown....

 from 1912 to 1923 as a Conservative.

He was the son of Robert Dewar and Jessie Dewar. In 1908, he married Laura McPhee. Dewar was a director and vice-president of the provincial Dairyman's Association.

His brother George

George F. Dewar

George Forbes Dewar was a physician and political figure in Prince Edward Island, Canada. He represented 3rd Queens in the Legislative Assembly of Prince Edward Island from 1911 to 1915 as a Conservative member....

 also served in the provincial assembly. His son George also later served in the assembly.