Thanks for the clarification, ceb. I get'cha now.

Saludos, MadridMan

I'm probably wrong, but for you to be able to take the Spanish citizenship after a year of legal residency (which btw is almost impossible to obtain) your grandfather should have been both a Spanish citizen and born in Spain. I think your grandfather was probably a Spanish citizen, but he wasn't born in Spain. So this rule doesn't apply to you. If none of your parents or grandparents was born in Spain it is almost impossible for you to automatically get Spanish citizenship.

My boyfriend's family is from Tenerife. You will have a great time in the Canary Islands because the lineage of family there is still very strong and you'll probably find many relatives all over the world.

Last year we went to his sister's wedding in the South of Spain and practically half the island of Tenerife showed up!

Good luck in your search.