7 It is to be noted, however, that a grandfather who has both a son, and by that son a grandson or granddaughter, in his power, may either release the son from his power and retain the grandson or granddaughter, or emancipate both together; and a great-grandfather has the same latitude of choice. 8 Again, if a father gives a son whom he has in his power in adoption to the son's natural grandfather or great-grandfather, in accordance with our constitution on this subject, that is to say, by declaring his intention, before a judge with jurisdiction in the matter, in the official records, and in the presence and with the consent of the person adopted, the natural father's power is thereby extinguished, and passes to the adoptive father, adoption by whom under these circumstances retains, as we said, all its old legal consequences. 9 It is to be noted, that if your daughterinlaw conceives by your son, and you emancipate or give the latter in adoption during her pregnancy, the child when born will be in your power; but if the child is conceived after its father's emancipation or adoption, it is in the power of its natural father or its adoptive grandfather, as the case may be. 10 Children, whether natural or adoptive, are only very rarely able to compel their parent to release them from his power. TITLE XIII. OF GUARDIANSHIPS Let us now pass on to another classification of persons. Persons not subject to power may still be subject either to guardians or to curators, or may be exempt from both forms of control. We will first examine what persons are subject to guardians and curators, and thus we shall know who are exempt from both kinds of control. And first of persons subject to guardianship or tutelage. 1 Guardianship, as defined by Servius, is authority and control over a free person, given and allowed by the civil law, in order to protect one too young to defend himself: 2 and guardians are those persons who possess this authority and control, their name being derived from their very functions; for they are called guardians as being protectors and defenders, just as those entrusted with the care of sacred buildings are called 'aeditui.' 3 The law allows a parent to appoint guardians in his will for those children in his power who have not attained the age of puberty, without distinction between sons and daughters; but a grandson or granddaughter can receive a testamentary guardian only provided that the death of the testator does not bring them under the power of their own father. Thus, if your son is in your power at the time of your death, your grandchildren by him cannot have a guardian given them by your will, although they are in your power, because your death leaves them in the power of their father.