Who is Germaine Dulac from The Theater and Its Double and what is their importance?

Germaine Dulac produced the first and only movie based on a scenario written by Antonin Artaud. The movie, "The Seashell and the Clergyman," is the first "surrealist" movie ever made and was first shown in France in 1926. Dulac is mentioned in the "In Memoriam" chapter that closes The Theater and its Double.