From a contemporary English Style Guide that is used by people who have been made aware of the political sensitivities of foreign geographical names in English:
Write Seville. Otherwise use native spellings, e.g. Córdoba, Irún. Use the Catalan names Girona and Lleida, and the Galician names A Coruña and Ourense, as these are now the official Spanish names for the cities and provinces also known as Gerona, Lerida, La Coruña and Orense (see Ley 2/1992, de 28 de febrero, por la que pasan a denominarse oficialmente Girona y Lleida las provincias de Gerona y Lérida and Ley 2/1998, de 3 de marzo, sobre el cambio de denominación de las provincias de La Coruña y Orense).
And early 20th century authors like Georgiana King and Walter Starkie referred to
Cebrero, no
i, no
O and no apostrophe.