Echard Jacques, a learned Dominican, was born at Rouen September 22, 1644, and died at Paris March 15, 1724. He published S. Thomae Summa suo autori vindicata, sice de V.F. Vincentii Bellovacensis scriptis dissertation in qua quid de speculo morali sentiendum aperitur (1708, 8vo). He has contributed to illustrate his order by the "Library of Dominican Writers" (Scriptores ordinis Prcedicatorum recens. notisque illustrati, inchoavit J. Quetif, absolvit J. Echard [Par. 1719-21, 2 vols. fol.]), which is held in high esteem by all bibliographers. — Hoefer, Nouv. Biogr. Gengr. 15:623.