ST Suppl., q. 58
Of the Impediments of Impotence, Spell, Frenzy or Madness, Incest and Defective Age
Supplement — compiled posthumously from Aquinas's early Sentences commentary
We must now consider five impediments to marriage, namely the impediments of impotence, spell, frenzy or madness, incest, and defective age. Under this head there are five points of inquiry:
(1) Whether impotence is an impediment to marriage?
(2) Whether a spell is?
(3) Whether frenzy or madness is?
(4) Whether incest is?
(5) Whether defective age is?