Ruy López Dávalos
Ruy López Dávalos (Úbeda, Jaén Province, Spain, 1357 - in exile, Valencia, Spain, 1428), Count of Ribadeo, Adelantado of Murcia, 1396, Constable of Castile, 1400–1423, during the reigns of kings Henry III of Castile and John II of Castile. He was very attached to king Henry III's uncle, Ferdinand of Antequera, afterwards elected king Ferdinand I of Aragon, reigning from 1412-1416. He was attached then to one of Ferdinand's troublesome sons, Infante Henry of Aragon (1400–1445).