Imperial Diet of 1209

Timeline

1. 1209Frankfurt · FrankfurtImperial electors and territorial princes gathered in Frankfurt for a diet amid the power vacuum following Philip's death; core agenda items included confirming Otto IV's position, addressing the Hohenstaufen succession and coordinating imperial foreign policy.
2. 1209Frankfurt · FrankfurtMost electors reaffirmed their recognition of Otto IV at the diet and reached preliminary consensus on papal conditions including the crusade expedition and the restoration of church territories; the guardianship of the young Frederick II and the Sicilian succession were also taken up.
3. 1209–1210Holy Roman Empire · Holy Roman EmpireThe diet set the short-term policy framework after the imperial dispute: Welf dominance, constraints imposed by papal conditions, and commitments to Italy and the crusades; it provided political backing for Otto's later Roman coronation and for imperial eastward expansion (including confirmation of the Teutonic Order's privileges).