Misc: what play contains the line 'something is rotten in the state of denmark'?

Questions

In 1934 Willard---------- , weatherman, original Ronald McDonald, born. ?

In 1936 Hitler breaks Treaty of ---------- by sending troops to Rhineland. ?

In 1960 Ivan---------- , tennis player, born ?

In 1326 Louis I (the Great), king of ---------- (1342-82), Poland (1370-82)?

In 1512 Gerhardus---------- , geographer & map maker?