No, that's not true at all. Please read the Spanish Civil Code, starting at Chapter 3 ("De la sucesión intestada") to see what's the order of heir prevalence in

No, that's not true at all. Please read the Spanish Civil Code, starting at Chapter 3 ("De la sucesión intestada") to see what's the order of heir prevalence in case of "unwritten inheritance". Only in the case that there isn't any relative, or widow, or widower, the State will get a 'abintestato' inheritance.