Intestacy (Intestate heir declaration). Lawyers in Barcelona, Spain In Catalonia, in cases where a person dies intestate, the heirs are the following and in this order: descendants, spouse and ancestors. Failing the foregoing: his or her siblings and the children of his or her siblings. In any case, the spouse has a life interest in all assets. If the heirs are the ancestors, children or spouse, the intestate heir statement must be certified before a notary. A number of birth and death certificates as well as two witnesses are required. If the heirs are siblings or their children, court proceedings for the declaration of intestate heirs must be initiated. Casanova Abogados can help you with all the pending formalities in the event of intestacy. Please request further information. 93 412 32 38 CONTACT US.