Hernán Sánchez de Palazuelos traveled with another ambassador, Payo Gómez de Sotomayor, to meet Sultan Bayazid I following the defeat of the Christians at the Battle of Nicopolis (1396). However, when the two Castilians reached the lands of Bayazid, the sultan was at war with the lord of the Mongols, and after his defeat at the Battle of Ankara (1402) they met the Mongol Emperor Timur (Tamerlane).
