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Wiki information Johannetta:
Johannetta of Sayn-Wittgenstein, was a German noblewoman member of the House of Sponheim, Sovereign Countess of Sayn-Wittgenstein-Sayn-Altenkirchen and by her two marriages Landgravine of Hesse-Braubach and Duchess of Saxe-Marksuhl. Born in...
Johanetta of Sayn-Wittgenstein was a daughter of Count Louis I of Sayn-Wittgenstein and his first wife, Anna of Solms-Braunfels, who was a sister of Amalia of Solms-Braunfels.