Shall I remind some that SPAIN didn't exist during Columbus time? It was the Crown of Castille and the Crown of Aragon, each one a separate entity at all levels -except dynastically, due to the marriage of Ferran d'Aragó and Isabel de Castilla.
The Crown of Aragon, in turn, was formed by several independent and semi-independent territories working in a sort of 'modern' confederacy: the Principality of Catalonia, the Kingdom of Aragon, the Kingdom of Valencia, the Kingdom of Majorca, the Kingdom of Sicily, Malta, the Kingdom of Naples and the Kingdom of Sardinia. For brief periods the Crown of Aragon also controlled Montpellier, Provence, Corsica, and the twin Duchy of Athens and Neopatras in Latin Greece.
Spain, as such, came to be only after the War of Succession (1701-1715) in which the Crown of Castille -alongside the French Bourbons- militarily conquered the territories of the Crown of Aragon and abolished their laws, armies and government bodies, imposing the Castillian ones instead.
Sooo, Columbus can't possibly be "Spanish" no matter what.
This is just to mess with those stubborn Spanish ultra-nationalist folks dead set on making Columbus 'Spanish' at all costs!