Countess Anna Magdalena von Hanau-Lichtenberg (14 December 1600 – 22 February 1673) was a daughter of Count Johann Reinhard I of Hanau-Lichtenberg (1569–1625) and Countess Maria Elisabeth of Hohenlohe-Neuenstein-Weikersheim (1576–1605).
Otto Louis died in Speyer from the plague buried in Strasbourg Cathedral).
He was the son of Count Christopher II of Fürstenberg (1580 – 1614) and Baroness Dorothea of Sternberg (d. 12 June 1633).
From 1639, he was Landgrave of Stühlingen and in 1642 the Emperor raised him from Freiherr to Imperial Count.
Anna Magdalene and Frederick Rudolph had 5 children, of which 4 died very young: