Complex sentence: His wife, Mary Horgan Mowbray-Clarke, was an art critic, instructor, the co-owner of the Sunwise Turn Bookshop at 2 East 31st Street in New York City, and a prominent anarchist, interested in fomenting political and social revolution.
Split into simpler sentences: His wife, Mary Horgan Mowbray-Clarke, was an art critic, instructor, the co-owner of the Sunwise Turn Bookshop at 2 East 31st Street in New York City. She was also a prominent anarchist, interested in fomenting political and social revolution.