John I (German: Johann I.) (15 May 1459 - 27 January 1509) was the Count Palatine of Simmern from 1480 until 1509. John was born in 1459 to Frederick I, Count Palatine of Simmern. He married Joanna of Nassau-Saarbrücken on 29 September 1481. John died in Starkenburg in 1509 and was buried in Simmern.
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