Hernán Sánchez de Palazuelos was an ambassador in the service of Henry III, the King of Castille.
He is said to have treated them with respect and sent them back accompanied with his own ambassador: Mohamad Alcagi (El-Kesh).
He also gave them three slaves, Greco-Hungarian princesses, captured at the Battle of Nicopolis six years earlier, and who had been part of Bayezid's harem ever since.
The ambassadors arrived in March 1403 in Segovia, where Angelina of Grecia, one of the freed slaves, said to be the granddaughter of the King of Hungary, married Diego González de Contreras, the mayor of the city.
He is recorded to have been descended from a certain Fernão Sanches de la Placuella, who was an ambassador to Henry III, and D. Cat.