Champlitte

The Champlitte were a knightly house of Franche-Comté, descended from the counts of Champagne of the House of Blois. Their ancestor Odo I, born in 1123 to Count Hugh of Champagne but denied legitimacy, was raised by his Burgundian mother's kin and became lord of Champlitte, near Vesoul.

His sons joined the Fourth Crusade: Odo II died at the siege of Constantinople in 1204, while William of Champlitte conquered the Morea together with Geoffrey of Villehardouin and in 1205 founded the Principality of Achaea as its first Frankish prince.

William died in Apulia in 1209 while returning to France, and his heirs failed to secure the succession, so Achaea passed to the Villehardouin. The family's Burgundian lordship of Champlitte was later inherited by a younger branch of the house of Vergy.