From the 13th century on, the kings of Castile, as kings of Galicia, appointed an Adiantado-mór, whose attributions passed to the Governor and Captain General of the Kingdom of Galiza from the last years of the 15th century.
Vicente del Bosque has announced Spain's squad for Euro 2016 and there is no place for Premier League pair Diego Costa or Juan Mata.
Fernando Torres also misses out despite impressing for Atletico Madrid in the second half of the season.
Valencia striker Paco Alcacer pays for his club's poor season and also drops out, while Santi Cazorla's injury problems have cost him his place.
Despite some big names missing out, Spain's 25-man squad, which will later be cut to 23, boasts incredible strength in the midfield positions with Sergio Busquets, Andres Iniesta, Koke, Thiago, Saúl Ñiguez, Isco, David Silva, Cesc Fabregas and Bruno all included.
35-year-old Athletic Bilbao striker Aritz Aduriz has been rewarded for his remarkable form this season, as has Lucas Vazquez of Real Madrid.
Goalkeepers: Iker Casillas (Porto), David De Gea (Man United), Sergio Rico (Sevilla).
Defenders : Sergio Ramos, Dani Carvajal (both Real Madrid), Gerard Piqué, Jordi Alba, Marc Bartra (all Barcelona), Cesar Azpilicueta (Chelsea), Mikel San José (Athletic Club), Juanfran (Atletico).
Midfielders : Bruno (Villarreal), Sergio Busquets, Andres Iniesta (both Barcelona), Thiago (Bayern), Isco (Real Madrid), David Silva (Manchester City), Pedro, Cesc Fabregas (both Chelsea), Saúl, Koke (both Atletico).
Forwards : Aritz Aduriz (Athletic), Nolito (Celta Vigo), Alvaro Morata (Juventus), Lucas Vázquez (Madrid).