Picasso's tragic first wife emerges from the shadows

She was Picasso's forgotten wife, written out of history as a "neurotic", snobbish depressive who was a drag on the great artist.

But a new exhibition is shining a very different light on Olga Khokhlova, his first wife who he refused to divorce because he did not want to split his artworks and his vast wealth with her.

Drawing on previously unseen letters, photographs and films from the Picasso family's private archives, Olga emerges as a major influence on the greatest painter of the 20th century.