Who married Catherine Of Cleves?

Arnold, Duke of Guelders married Catherine Of Cleves on July 14, 1423. Catherine of Cleves was 6 years old on the wedding day (6 years, 1 months and 20 days). Arnold, Duke of Guelders was 13 years old on the wedding day (13 years, 0 months and 9 days). The age gap was 6 years, 10 months and 20 days.