an Entity references as follows:
The Fernandine Wars (from the Portuguese Guerras Fernandinas) were a series of three conflicts (1369–70, 1372–73, 1381–82) between the Kingdom of Portugal under King Ferdinand I and the Crown of Castile under Kings Henry II and later John I. They were fought over Ferdinand's claim to the Castilian succession after the murder of King Peter of Castile in 1369.