 Johann Philipp, Duke of Saxe-Altenburg

Johann Philipp (25 January 1597 – 1 April 1639), was a duke of Saxe-Altenburg.He was born in Torgau, the eldest (but fourth in order of birth) surviving son of Friedrich Wilhelm I, Duke of Saxe-Weimar and Anna Maria of the Palatinate-Neuburg, his second wife.