All times in UTC ·
Dashed edge = started before, or continues beyond, this day
Events on Saturday 19 September 1468 1
1468Treaty of Los Toros de GuisandoHenry IV of Castile recognizes Isabella as heirKing Henry IV of Castile signed an agreement with rebellious nobles recognizing his half-sister Isabella as heir to the Castilian throne in place of his daughter Joanna. The pact was negotiated near the stone bull statues of Guisando in Avila province. It paved the way for Isabella's eventual accession and marriage to Ferdinand of Aragon.