fil·i·ate /'fi-lē-ˌāt/ vt -at·ed, -at·ing: to declare (a child) the descendant of a particular parent and esp. a father
has not been filiated by the initiative of the parent — Louisiana Civil Code compare acknowledge 2b, legitimate
◇ A child may be illegitimate but filiated. Both legitimation and acknowledgment filiate an illegitimate child. Adopted children are filiated by the adoption proceeding.
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.