Table:
text: Imperial vicar
List of Imperial vicars 1437-1792
List of Imperial vicars 1437-1792
Interregnum_began Interregnum_ended Duration Count_Palatine_of_Saxony Count_Palatine_of_the_Rhine
20 January 1612 death of Rudolph II 13 June 1612 election of Matthias 4 months, 24 days John George I, Elector of Saxony Frederick V, Elector Palatine
20 March 1619 death of Matthias 28 August 1619 election of Ferdinand II 5 months, 8 days John George I, Elector of Saxony Frederick V, Elector Palatine
2 April 1657 death of Ferdinand III 18 July 1658 election of Leopold I 15 months, 16 days John George II, Elector of Saxony Ferdinand Maria, Elector of Bavaria
17 April 1711 death of Joseph I 12 October 1711 election of Charles VI 5 months, 25 days Frederick Augustus I, Elector of Saxony John William, Elector Palatine

Question: What ended the interregnum for the Count Palatine of Saxony by Friedrich August I, Elector of Saxony under Imperial Vicar?

Question: How did the interregnum for Count Palatine of Saxony by Johann Georg II, Elector of Saxony under Imperial Vicar, end?

Question: In view of the imperial vicar, what was the name of the Count Palatine of the Rhine with an interregnum that ended on April 2, 1657 with the death of Ferdinand III. started?