Education
He was born in Jedburgh and was educated there and at Saint Andrew"s University.
He was born in Jedburgh and was educated there and at Saint Andrew"s University.
He represented Lorne from 1896 to 1903 in the Legislative Assembly of Manitoba as a Liberal. Riddell married a Mission Sharp in Galt, Ontario. He came to Carman, Manitoba in 1880.
He was president of the Dufferin Agricultural Society.
Riddell was defeated when he ran for the Dufferin seat in the Manitoba assembly in 1903. In 1904, he was an unsuccessful candidate for the Macdonald seat in the Canadian House of Commons.
Riddell later was president of the Caledonia Box and Manufacturing Company in Winnipeg. He died at home in Winnipeg at the age of 76.