Following their marriage, Ruy and Leonor moved to Carmona, a fortified city in the south of Spain, near Seville with the rest of the family. While they lived there, Pedro I was killed by his half-brother, who assumed the crown as Enrique II, and besieged Carmona, because Martín López and his family were partisans of the murdered king. After several attempts to capture the city, Martín López finally surrendered to Enrique in 1371 under a promise of safe conduct out of the country. However, the king did not keep his promise and killed the "maestre" and imprisoned his family in the Atarazanas of Seville.