Frederick II of Hesse-Kassel (1720-1785) Landgrave of Hesse-Kassel
This is a disambiguation page — a navigational aid which lists pages that might otherwise share the same title. If an article link referred you here, you might want to go back and fix it to point directly to the intended page.
Frederick returned in 1229 and signed (1230) the Treaty of San Germano, by which he was temporarily reconciled with the pope.
Frederick issued a circular against the pope and seized most of the Papal States; in May, 1241, he captured a number of prelates en route from Genoa to a general council in Rome, and he was threatening Rome when Gregory died.
FrederickII was one of the most arresting figures of the Middle Ages.