Have you ever noticed that some kids have different last names from their parents? This is because when a baby is born, they don't automatically have their parents' last name. They have to go through a process called "legitimation" to officially become a part of their parents' family.
Legitimation is like a legal stamp that says "this child belongs to this family". It's a way to make sure that everyone knows who the parents are and who the child's relatives are.
Sometimes, a baby is already born to parents who are married, so the baby automatically gets both parents' last names. But if the parents aren't married or if they have different last names, they have to go to a government office and fill out some paperwork to legitimize their child.
Once the child is legitimized, they get their parents' last name and they can inherit things from their family, like property or money. They also get to have the same last name and legal family connections as their siblings.
Legitimation is an important process because it helps families stay connected and keeps everyone's legal rights and responsibilities in order.