Dulce of León

[1][2] After the death of Sancha's brother (1214), Alfonso IX named his second son, also Ferdinand, his heir, bestowing on him the title infante (1216).

[3] In that same year, Ferdinand's mother, Berengaria, inherited the crown of the Kingdom of Castile, but ceded it to her son, who was proclaimed king at Valladolid on 2 July.

This agreement, negotiated at Valencia de Don Juan by Berengaria and Theresa, with Sancha and Dulce present, is known as the "pact of the mothers".

[1] The treaty was signed Benavente and in compensation Ferdinand promised a yearly stipend of 30,000 maravedíes to each of his half-sisters and the lordship of certain castles.

After the renunciation, Dulce retired to the Cistercian monastery of Santa María in Villabuena, in El Bierzo, which had been founded by her mother, with her father's blessing.