A native of Forwich, Ontario, Armington was a practiced painter and etcher. Studying in Toronto at the studio of J.W.L. Forster, he met his future wife Caroline Helena Wilkinson. The family traveled to Paris in 1899 and studied at the Academie Julian under Benjamin Constant. His stay in Paris proved inspiring as there is a strong influence of French Impressionists in his portrait and landscape works. He taught art in Winnipeg with his wife and was founding member and vice president of the Manitoba Society of Artists. In 1905, the couple returned to Paris where Armington took up etching. He exhibited his etchings of Paris and other various European cities in a variety of Paris salons. Armington's work is in the collection at the NGC and was exhibited at the RCA and AAM (1910).