JOSCELLINUS (Joslenus, Gauslenus) of Soissons.
- Master of dialectic at the Abbey of St Genevieve in Paris, a contemporary of Abelard, died on 25 October 1151. He was archdeacon (1115) and bishop (1125) of Soissons. Advisor to King Louis the Young, he took part in the Council of Sens (1140) against Abelard and in that of Paris (1147) against Gilbert de la Porrée.
According to John of Salisbury (Metalogicon, 17), J. «universalitatem rebus in unum collectis tribuit, et singulis eamdem demit», a thesis that would seem identical to that which Boethius (In Porph. a se transl., 1: PL 6-4, 85) attributes to Aristotle and which was also held by Gilbert Porreta. Cousin (Ouvr. inéd. d'Abélard, Paris 1836) published, attributing it to Abelard, an anonymous De generibus et speciebus in which the same theory is upheld, and which some therefore consider to be the work of J. or of one of his disciples.