The 1257 imperial election was a double election in which the prince-electors of the Holy Roman Empire split into factions and elected two rivals, earl Richard of Cornwall and King Alfonso X of Castile, each claiming to have been legally elected.
The 1257 imperial election was a double election in which the prince-electors of the Holy Roman Empire split into factions and elected two rivals, earl Richard of Cornwall and King Alfonso X of Castile, each claiming to have been legally elected. (en)
The 1257 imperial election was a double election in which the prince-electors of the Holy Roman Empire split into factions and elected two rivals, earl Richard of Cornwall and King Alfonso X of Castile, each claiming to have been legally elected. (en)