Fernando de Santiago y Díaz de Mendívil ( July 23 , 1910 -- November 6 , 1994 ) was a conservative deputy and interim prime minister of Spain during the Spanish transition to democracy in the late 1970s .
Fernando de Santiago y Díaz de Mendívil ( July 23 , 1910 -- November 6 , 1994 ) was a conservative Spanish politician . He was the deputy and interim prime minister of Spain during the Spanish transition to democracy in the late 1970s .