The past century is littered with the turbulent relationships of artist couples: Picasso and Dora Maar, Pollock and Lee Krasner, Diego Rivera and Frida Kahlo… It’s often been hard to tell where support ends and competition begins. As interesting as any pairing – if less famous – were Edward Hopper and his headstrong wife, Jo. Both had studied at the New York School of Art, and before their marriage in 1924, it was she who was the more famous. Soon, however, his eerie scenes of isolated people and buildings were a huge success – visions of motels, gas stations and late-night cafeterias that seemed to epitomise modern-day America – and she duly subordinated her career to his.