Armand Seguin was born in 1869 in Paris. Very little is known about his origins or his early education. Seguin is first documented in 1891 in Pont- Aven where he met several Pont-Aven artists, exhibited locally and penned reviews for a local newspaper. He returned to Pont-Aven in 1892 and met Renoir, Amiet and Bernard.
In 1893 Seguin was introduced to Gauguin who gave gim lessons and later wrote the catalogue introduction for Seguin’s one-man show in 1895. Seguin collaborated with Roderic O'Conor in 1893 at Le Pouldu near Pont-Aven in Brittany. Seguin introduced O'Conor to the technique of etching and, together, they produced a number of etchings.
Destitute and an alcoholic, Seguin moved constantly from Paris, Normandy, Savoy, Brussels and Brittany, searching for stability. He spent the last years of his life in Brittany, living in Sérusier’s home in Châteauneuf-du-Faou, where he died in 1903.