Friedrich Wilhelm III, Duke of Saxe-Altenburg
Friedrich Wilhelm III, 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. Wikipedia
Born: July 12, 1657, Altenburg, Germany
Died: April 14, 1672 (age 14 years), Altenburg, Germany