Jean Guinard was born in the small Breton community of Plounez, which was incorporated into the municipality of Paimpol in 1960. He worked as a teacher 1920-1927. Subsequently, he studied Fine Arts as a free pupil of Ernest Lawrence at the École Nationale Supérieure des Beaux-Arts in Paris until 1930. He was well acquainted with the Breton nationalist group Breiz Atao and joined the Ar Seiz Breur movement of his friend René-Yves Creston since its founding in 1929. Moreover, he was interested in teaching the Breton language and affiliated with the Ar Falz organization. In 1935, he took over the supervision of the organization’s newsletter. Guinard was also a follower of the methods of the Hébertists, a radical revolutionary political group during the French Revolution. In 1931, he submitted a large painting of the Île de Bréhat off the Breton coast in a competition of the Salon de la Société des Beaux Arts in Paris. He was awarded the first prize, a six-month trip, at the time worth 10,000 francs. In turn, he had to produce six paintings. He decided to do sea kayaking and spend the winter at the Adriatic coast. Guinard is buried at Bréhat.