Augustus II, called the Younger, a member of the House of Welf was Duke of Brunswick-Lüneburg. In the estate division of the House of Welf of 1635, he received the Principality of Wolfenbüttel which he ruled until his death. Wikipedia
Born: April 10, 1579, Dannenberg, Germany
Died: September 17, 1666 (age 87 years), Wolfenbüttel, Germany
Great-grandparents: Henry I, Duke of Brunswick and Margaret of Saxony, Duchess of Brunswick-Lüneburg
Parents: Henry, Duke of Brunswick-Dannenberg
Grandparent: Ernest I, Duke of Brunswick
Spouse: Duchess Elisabeth Sophie of Mecklenburg (m. 1635–1666), Dorothea of Anhalt-Zerbst (m. 1623–1634), and Clara Maria of Pomerania (m. 1607–1623)