Theobald II of Navarre

Theobald II (1239–1270), called the Young, was king of Navarre and count of Champagne from 1253, succeeding his father Theobald I at fourteen. His mother Margaret of Bourbon and James I of Aragon acted as regents until 1256, after which he asserted royal power against the fueros-bound nobility.

He granted rights to towns, and in 1266 held Navarre's first census. In July 1270 he joined Louis IX's Eighth Crusade to Tunis. Louis died during the siege, and Theobald died childless at Trapani in December 1270; his brother Henry I succeeded him.