Cika wannan jumla:
Yaƙin Nasara na Castilian lokacin da aka yi jayayya game da halaccin tsakanin Elizabeth da Joanna na Castile, wanda magabtansa suka yi wa lakabi, "La Beltraneja". Sueiro ya kasance mai tsaka tsaki a siyasance, amma bai taɓa adawa da yiwuwar haɗakar da masarautar Galicia a cikin kambin Fotigal ba, a matsayin sadaki na Gimbiya Joanna.