Bertrand de Thessy

The Teutonic Knights under Hermann of Salza, unused to disobedience vis-à-vis a German sovereign, fully supported the emperor.

Lacking a strong army, the emperor was not looking for confrontation but for negotiation which ended up being successful on 18 February 1229, resulting in Jerusalem, Bethlehem and Nazareth being returned to the Franks.

[4] Thessy, together with the Templars and the patriarch Gérold of Lausanne, representing the clergy of the Holy Land, refused to accept the treaty as the Principality of Antioch and the County of Tripoli were excluded from the considerations.

[5] In August 1229, Gregory IX issued a papal bull to the Latin patriarch directing that the Hospitallers maintain jurisdiction over the Teutonic Knights, in punishment for their following Frederick.

[6] The Hospitallers and Templars took advantage of the fact that they were excluded from the treaty and, in the fall of 1229, led a successful incursion into the north of the country against the Muslims of the fortress of Montferrand and a disastrous expedition to Hama in July and August 1230.