The Cuban status is complex. They can claim minority or Castilian status
.
Spain’s Law of Historical Memory
http://www.globalpost.com/dispatch/spain/100103/emigrant-nationality
Cuba is among the nations with more descendents applying for Spanish nationality. The Spanish news agency Europa Press reported that the Spanish consular office in
Cuba receives 325 applicants every day. The law originally established a two-year period to present applications, with the possibility of a one-year extension — until December 2011 — which the Council of Ministries approved on Jan. 22.