fillacion is incorrectly written, and should be written as "sonship" being its meaning:
It is a legal concept that defines the relationship or link between a person and their parents or adoptive parents. This concept changed with the Spanish Constitution of 1978 stipulates that all are equal before the law, without that can prevail any discrimination by reason of birth ( Art. 14 ) as in pre-constitutional law was made distinction between legitimate children and illegitimate ( natural and not natural ). This relationship implies rights and obligations. The term derives from the latin filius filii: son.
