Sancha, heiress of León_

Sancha of León was briefly suo jure Queen of León, reigning alongside her younger sister, Dulce. The eldest child and daughter of Alfonso IX of León by his first wife, Teresa of Portugal, Sancha was made co-heiress following the death of one of her younger brothers and the accession to the throne of Castile of the other. Sancha and her sister did not get to reign, as their stepmother succeeded in setting up her own son on the throne.