The personality of Isidor of Seville, canonized by the Catholic Church and declared Doctor of Church, and his writings which influenced occidental medieval theology were poor studied in romanian areal. For this reason we aim to realize a short presentation of the life and work of Bishop Isidor of Seville and of the way he is received in medieval times by West of Europe writers, both theologian and profane, in order to prove that he was considered rightly and encyclopedist of his times.