Louis I, German nobleman and politician (d. 1605)
Louis I, Count of Sayn-Wittgenstein, nicknamed "the Elder", formally "Louis I of Sayn, Count at Wittgenstein" (7 December 1532 at Wittgenstein Castle, near Bad Laasphe – 2 July 1605, while travelling near Altenkirchen) ruled the County of Wittgenstein, on the upper reaches of the rivers Lahn and Eder, from 1558 until his death. He converted his county to Calvinism and was an influential politician in the service to the Electoral Palatinate.