Cuartillo - Alfonso de Avila pretender, Toledo

Alfonso de Ávila was proclaimed king by rebellious Castilian nobles in June 1465 at the "Farce of Ávila," a staged ceremony in which an effigy of the reigning Henry IV was symbolically stripped of crown, scepter, and sword before being toppled from a platform. The Toledo mint, one of the most productive in Castile, struck coins in the name of this child pretender — Alfonso XII as his supporters styled him — for the roughly three years his claim held any serious military backing.

Henry IV survived the revolt. Alfonso died in 1468, almost certainly of plague, collapsing the rebellion before it reached resolution by force.