Original: 11th and 12th centuries: Expansion and union to the Kingdom of León In 1028, Sancho III of Navarre married the sister of Count García Sánchez and inherited the County of Castile after his brother-in-law's death.
Simplified: 11th and 12th centuries: Expansion and union to the Kingdom of León In 1028 Sancho III the Great, of Navarre, married the sister of count García Sánchez and inherited title to the County of Castile after his brother-in-law's death.