There are many benefits to holding Spanish citizenship. First of all, you can work, live and vote in this country. Secondly, Spain is part of the European Union, which means you can travel freely and even obtain residence in any country that is a member. There are different ways to apply for Spanish nationality. The most straightforward one is by descent, but this does not mean you can obtain citizenship based solely on your family name. You will need to prove that either of your parents and/or one of your grandparents were Spanish.