wife, for marriage proves filiation,34 and this presumption will stand until the  contrary is proved, as where it is shown that the husband has had no connexion  with his wife for some time before, because of illness or other cause, or was of such  age that he could not procreate a child, or was away for ten years and on his return  found a year-old child.35 Such child, though born in the husband's house to the  neighbours' knowledge, will not be his son.36 On this subject more may be found  below [in the portion] on supposititious offspring.37
How paternal potestas and seignorial potestas are extinguished.
 38We have indicated above how seignorial and parental potestas is established. Now  we must show how it is dissolved and extinguished. That may be done, in the case  of free persons, in three ways, namely, by natural death, civil death, and by the  attainment of office. [In the case of bondsmen, the lord's authority is extinguished  by manumission.] By natural death, as where a father who has a son in his potestas  dies, for his sons begin to be sui juris, though in some cases they remain under the  tutela of their lords or the cura of their friends or kinfolk.39 On the death of a  paternal grandfather his grandchildren do not become sui juris but fall under the  potestas of their father, if he is alive when the grandfather dies and they have not left  the potestas of the father by emancipation or in some other way, as by attaining  office. By civil death, as where the father or other ancestor is condemned to death  for felony or banished to perpetual exile. If he is banished temporarily he retains  his children in his potestas nonetheless, for on his return he will have what is his.  [And finally], by the attainment of office, as by achieving the episcopal dignity.  Paternal potestas is also ended by emancipation,40 as where one forisfamiliates his  son with a portion of his inheritance, as was anciently the custom.41 Seignorial  potestas sometimes is ended by manumission, as where a lord, by one of the several  methods of manumission, sets his bondsman free, as will be explained below [in the  portion] on manumissions.42
Some are under tutelage or curatorship or wardship.
 43The first classification of persons was this, that all men are either free or bond.  The second, that persons are either sui juris or in the potestas of another. Now  follows a [third] classification: that of persons not within the potestas of another  some are in the wardship or tutelage of lords, some in the cura of relatives and  friends (as
34. Glanvill, vii, 12: quia filius heres legitimus est quam nuptiae demonstrant.; infra 185, 201, 204, 255