The Siege of Xerigordon pits an unknown number of Germans of the People's Crusade under Reinald against an unknown number of Turks commanded by Elchanes, general of Kilij Arslan I, the Seljuk Sultan of Rûm.

The crusader raiding party captures the Turkish fort of Xerigordon, about four days march from Nicaea, in an attempt to set up a pillaging outpost.

Elchanes arrives three days later and besieges the crusaders.

The defenders have no water supply, and after eight days of siege, they surrender on September 29, 1096.

Some of the crusaders convert to Islam, while others who refuse to abandon their faith are killed.