Thibaud de Champagne

Theobald I (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. Born in Troyes, he was the son of Theobald III of Champagne and Blanca of Navarre, the youngest daughter of Sancho VI of Navarre. His father died before he was born, and Blanca (Blanche in French) ruled the county as regent until Theobald turned twenty-one in 1222.