Lucas, De Tuy (Or Tudensis),
a Spanish theologian and writer, was born at Leon, where he became canon of St. Isidore, and was afterwards appointed deacon of Tuy, in Gallicia. In 1227 he made a journey to Jerusalem, saw pope Gregory IX in Italy, and also the general of the Order of Franciscans. He was appointed bishop of Tuy in 1239, and died in 1250. He wrote a Chronicle of Spain, extending from 670 to 1236 (published by Schott in his Hisp. Ill., Francf. 1663, fol., volume 4), and a Vita et historia translationis S. Isidori, which is reproduced in the article on that saint in the Acta Sanctorum, April 4. The second part of this work, which does not at all relate to St. Isidore, is a passionate and superficial attack against the Cathari (q.v.); valuable, however, for its information concerning some customs of that sect in the south of France and in Spain. This part of Lucas's work was published separately by Mariana, under the inappropriate title of Libri tres de altera vita fideique controversiis contra Albigensium errores (Ingolst. 1613, 4to; reprinted in the Biblioth. Patrum Maximna, 25:188, and in the Bibliotheca Patrum of Cologne, 13:228). Lucas also rejected as heretical the view which afterwards obtained of the three persons of the Trinity being of different ages, and asserted, contrarily to the then prevailing notion, that Christ ought not to be represented as crucified with the feet crossed, but with the two feet side by side, each pierced with a separate nail. — Herzog, Real-Encykl. 8:558. (J.N.P.)