and Thrace, but also many mercenaries; according to the Chronicle of the Morea, 300 German knights, "all select, all hand-picked", 1,500 Hungarian "choice mounted archers", 600 Serbian horsemen, likewise "all good archers", and even Bulgarian cavalry, as well as 1,500 Turkish and 2,000 Cuman cavalry. The Chronicle mentions that the Germans were led by the "Duke of Karentana", usually identified with Carinthia. The duke at the time was Ulrich III, but he ruled for many years after 1259, and was probably not at the battle, where the Chronicle maintains that he was killed at the hand of Geoffrey of Briel, the Baron of Karytaina. The modern editor of the Greek version of the chronicle, , opined that the "Duke of Karantana" is a fictitious character symbolizing a brave warrior, and the name was chosen possibly under the influence of a corruption of the name Karytaina. It is also likely that Latin troops fought on the Nicaean side, although they are not explicitly mentioned: they were a prominent element of previous Nicaean armies, and Michael Palaiologos had relied on their support for his usurpation. The total size of the Nicaean army is nowhere reported, except for a reference in the Greek Chronicle that it comprised 27 regiments (). However, according to the historian Deno John Geanakoplos, "the statements of the Chronicle of the Morea are often exaggerated", and "one gets a clear impression from the sources [...] that the allied forces surpassed those of Nicaea in size". Differences in the sources The main Byzantine sources, George Akropolites, Nikephoros Gregoras, and George Pachymeres, offer considerably divergent accounts on the exact course of events before and during the battle, while the Western sources, chiefly the Greek and French versions of the Chronicle of the Morea and the history of the Venetian Marino Sanudo Torcello, in turn differ from the Byzantine sources and from each other. The narrative of the Chronicle is generally considered less reliable, being riddled with errors and mix-ups, but often provides details not appearing elsewhere. The account of the Chronicle focuses not on Prince William of Villehardouin, but on his nephew Geoffrey of Briel, whose deeds in the battle are presented in length, and in a style reminiscent of contemporary epic poems on Achilles or Digenes Akritas, whereas William is almost mentioned in passing. Briel was the only male grandchild of the first Villehardouin Prince of Achaea, Geoffrey I of