Johannette von Isenburg-Grenzau (1500-1563) (1500–1563) Parents Salentin VII of Isenburg Elisabeth of Hunolstein-Neumagen Children Louis I, Count of Sayn-Wittgenstein Georg zu Sayn-Wittgenstein Siblings Jutta of Isenberg-Grenzau Anna von Isenburg Henry of Isenburg-Neumagen Partners William I, Count of Sayn-Wittgenstein