His older brother Luis was once imprisoned for his political activities opposing the dictatorship of Francisco Franco, subsequently became a distinguished leader in the Spanish telecommunications industry and was one of the first socialist members of the Trilateral Commission.
Vanem vend Luis Solana oli vangis oma Franco-vastase poliitilise tegevuse tõttu, aga hiljem sai temast Hispaania telekommunikatsioonitööstuse juht ja Trilateraalse komisjoni üks esimesi sotsialistist liikmeid.