Complex sentence: Cavendish was a poet, philosopher, writer of prose romances, essayist, playwright and, some say, a tireless self-publicist, publishing under her own name at a time when most women writers published anonymously.
Split into simpler sentences: Cavendish was a poet, philosopher, writer of prose romances, essayist, playwright and, some say, a tireless self-publicist. Cavendish published her work under her own name at a time when most female writers published anonymously.