They were footballers from the Hungarian "Golden Team", which was abroad during the 1956 events, and half of it decided to not return home (which was basically the end of Team Hungary as global football superpower). The three listed stayed in Spain (Puskás played in Real Madrid, the other two in Barcelona).

What I can't fanthom (and them being national monuments, the local media doesn't ponder) is how came that they took refuge from one totalitarian dictature in another. If you (or Migeru or kcurie) can find anything about this aspect in Spanish, I would be very grateful.

_{*Lunatic*, n.
One whose delusions are out of fashion.}