Anne of Cleves
Anne of Cleves (1515 - 1557) was the fourth wife of Henry VIII. She was the daughter of a powerful German noble, and Henry married her in 1540 while following Thomas Cromwell's advice to forge international bonds. The marriage was not what Henry had hoped and he had Parliament dissolve the marriage after six months. The dissolution was apparently mutual and they stayed on friendly terms. They had no children together.
The New American Desk Encyclopedia, Penguin Group, 1989