About Friedrich Wilhelm III, Duke of Saxe-Altenburg
Friedrich Wilhelm III (b.
Altenburg, 12 July 1657 – d.
Altenburg, 14 April 1672), was a duke of Saxe-Altenburg.
He was the second son of Friedrich Wilhelm II, Duke of Saxe-Altenburg and Magdalene Sybille of Saxony, his second wife.