Guillaume Seignac was born in Rennes, France in 1870. He became a dedicated follower to traditional academics. From 1889 until 1894 he studied at the Academy Julian in Paris, where he received vigorous training . His teachers included Tony Robert-Fleury, a noted history and genre artist, Gabriel Ferrier, who had been awarded the Prix de Rome in 1872 and William Adolph Bouguereau, one of Frances most academic painters of the time and winner of the Prix de Rome and one of the most successful French painters of all time. Each teacher a highly renowned painted from the 19th Century. Seignac began exhibiting at the Salon in 1897 and did so almost yearly until his death in 1924. He was elected a member of the Society of French artists in 1901 and that same year was also appointed an Officer of the French Academy. Seignac also received an Honorable Mention at the Salon of 1900 and a Third Class medal in 1903. In 1906 Seignac was appointed to the post of Officer of Public Instruction in Art. Specializing in portraying romantic figures of beautiful women, both in the nude and clothed, he was addressed with much success, mostly in the United States, where his work could be found in many collections.
The look of the "Official" art of the Salon continued in the work of Guillaume Seignac, or, as Charles Saunier wrote of his art in the Salon of 1908: "Bouguereau is dead, long live Bouguereau! Or, rather, long live Monsieur Seignac! For in the works of the disciple live once more the subjects dear to the dead artist, with his mellowness and perfection of execution."