I don't have enough information about this House Castillo from the novel. However, it might be a powerful and influential house. It could have a large estate, many servants, and be involved in politics or trade. Maybe it has a unique culture within it, like special feasts or ceremonies.
Well, since I don't have the full 'enrique life story', I can only assume some common elements. Maybe Enrique grew up in a small town. He could have had a passion for something like music or art from a young age. As he got older, he might have faced some challenges in his family or with his studies. However, he overcame them and pursued his dreams. He could have met some important people along the way who influenced his life greatly.