Who dated Frieda Koch?

Lubertus Jacobus Swaanswijk (15 September 1924 – 10 May 1994), known professionally as Lucebert (Dutch: [ˈlysəbɛrt]), was a Dutch artist who first became known as the poet of the COBRA movement.

He was born in Amsterdam in 1924. He entered the Institute for Arts and Crafts in 1938 and took part in the first exhibition of the COBRA group at the Stedelijk Museum in 1949.