Huth Psalter, ca. 1280, London, British Library Add. 38116, fol. 9r, Adam and Eve, Cain and Abel

Guido de Baysio (ca. 1300), Rosarium (Venice 1480 and 1495) D.45 c.3, s.v. blandimentis (unfoliated):  .  .  . I believe that princes for whom their Jews are slaves, can take small children from them without any injury, since Jews have no power over them as slaves (patriapotestas) .  .  .  The princes may give the same children as their servants and give them to others or sell them into slavery, in spite of their unwilling parents, and thus can take them away to be baptized, and in doing this they can gain merit.  The princes cannot, however, compel the parents to the faith .  .  .   Thomas Aquinas (contra) and Duns Scotus (pro)