John Francis Desideratus, Prince of Nassau-Siegen
…1627 – 17 December 1699) was count of Nassau-Siegen and stadtholder of Limburg and Upper Guelders. John Francis Desideratus was the only son of Count John VIII of Nassau-Siegen, who had converted to Catholicism, and Ernestine Yolande de Ligne d'Amblise. He succeeded his father in 1638 as count of Nassau-Siegen, but had to cede…