Margaret of Guelders
Margaret of Guelders (1288–1333) was a daughter of Reginald I, Count of Guelders, and his wife Margaret of Dampierre. In 1297 she was betrothed to Dietrich of Cleves, the future Count Dietrich VIII, and the marriage was celebrated around 1308.
Her daughters included Margaret, who married Count Adolf II of the Marck in 1332, and Elisabeth, later the wife of Otto the Younger of Hesse. She died in 1333, and Dietrich then married Maria of Jülich.