Amadore is an Italian variant of Amatore, nowadays used as surname; other Italian variants are Amadori and Amatori (
http://www.melegnano.net/cognomi/cognomi0001m.htm).
The endings in -ore are not Spanish, but Italian, because in Spanish (and other Latin languages), the names are usually derivated from nominative form (amator>amador; salvator>salvador, e.g.); in Italian, they are usually derivated from genitive form (amatoris>amatori>amatore[>amadore], salvatoris>salvatori>salvatore[>salvadore], e.g.).
Amador (usual in Spanish, nowadays even, and parallel to Italian Amatore) comes
directly from the Latin first name Amator/Amatrix testified as
cognomen in Imperial
Roman Age (I. Kajanto,
The Latin Cognomina,
Roma 1982) (derivated from
amator, -oris, "one who loves, lover"), and used among Christians from Rome because of its symbolic sense ("one who loves God").
Lumia
http://onomastica.mailcatala.com