Who dated Eleanor, Duchess of Gloucester?

Eleanor Cobham (c.1400 – 7 July 1452) was an English noblewoman, first the mistress and then the second wife of Humphrey, Duke of Gloucester. In 1441 she was forcibly divorced and sentenced to life imprisonment for treasonable necromancy, a punishment likely to have been politically motivated.

Roger Bolingbroke (died 18 November 1441) was a 15th-century English cleric, astronomer, astrologer, magister and alleged necromancer. He flourished in the first half of the 15th century. He was tried, convicted and executed for treasonable witchcraft on the person of Henry VI of England.