Thibaut de Champagne

Theobald I (Thibaut IV) (30 May 1201 – 8 July 1253), called the Troubadour, the Chansonnier, and the Posthumous, was Count of Champagne (as Theobald IV) from birth and King of Navarre from 1234. He was the first Frenchman to rule Navarre.