Peter A. MacIsaac was a dairy 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 1st Kings

1st Kings

1st 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 easternmost 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 1935 to 1943 as a Liberal

Prince Edward Island Liberal Party

The Prince Edward Island Liberal Party is a major political party in the province of Prince Edward Island, Canada. The PEI Liberals are aligned with the federal Liberal Party of Canada. The party is led by Robert Ghiz, a former member of the staff of the Prime Minister's Office under Prime Minister...

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He was born in Souris, Prince Edward Island

Souris, Prince Edward Island

Souris is a Canadian port town in northeastern Kings County, Prince Edward Island. It is located in an area famous for its beaches and potatoes, containing the majority of Prince Edward Island's potato manufacturers.-History:...

, the son of Donald A. MacIsaac and Annie Ford. MacIsaac was a lieutenant in a Canadian artillery unit from 1898 to 1902. In 1910, he married Mary Josephine McInnis. He was an unsuccessful candidate for a seat in the provincial assembly in 1931 and was defeated when he ran for reelection in 1943. MacIsaac died in the Souris Hospital at the age of 80.