Sancho III of Navarre - Regency and Early Acquisitions

Regency and Early Acquisitions

Sancho was born around 992 to García Sánchez II the Tremulous and Jimena Fernández, daughter of the count of Cea on the Galician frontier. He was raised in Leyra. His father last appears in 1000, while Sancho is first found as king in 1004, inheriting the kingdom of Pamplona (later known as Navarre). This gap has led to speculation as to whether there was an interregnum, while one document shows Sancho Ramírez of Viguera reigning in Pamplona in 1002, perhaps ruling as had Jimeno Garcés during the youth of García Sánchez I three generations earlier. On his succession, Sancho initially ruled under a council of regency led by the bishops, his mother Jimena, and grandmother Urraca Fernández.

Sancho aspired to unify the Christian principalities in the face of the fragmentation of Muslim Spain into the taifa kingdoms following the Battle of Calatañazor. In about 1010 he married Muniadona Mayor, daughter of Sancho García of Castile, and in 1015 he began a policy of expansion. He displaced Muslim control in the depopulated former county of Sobrarbe. In Ribagorza, another opportunity arose. The 1010 partition of the county left it divided between William Isarn, illegitimate son of count Isarn, and Raymond III of Pallars Jussà and his wife, Mayor of Castile, who was both niece of Isarn and aunt of Sancho's wife. In 1018, William Isarn tried to solidify his control over the Arán valley, but was killed, and Sancho jumped on the opportunity to take his portion, presumably based on some loose claim derived from his wife. Raymond and Mayor annulled their marriage, creating a further division finally resolved in 1025 when Mayor retired to a Castilian convent and Sancho received the submission of Raymond as vassal. He also forced Berengar Raymond I of Barcelona to become his vassal, though he was already a vassal of the French king. Berengar met Sancho in Zaragoza and in Navarre many times to confer on a mutual policy against the counts of Toulouse.