Saint Isidore of Seville, born around 560 AD, was a scholar, theologian, and Archbishop of Seville. He is best known for his encyclopedic work, the Etymologiae, a compilation of knowledge from classical antiquity, which became a key reference in medieval scholarship. Isidore’s writings covered a broad range of subjects, including history, geography, science, and theology, making him one of the most influential scholars of his time. His efforts helped preserve and transmit knowledge during the early Middle Ages. He died in 636 AD, and was canonized as a saint. His feast day is celebrated on April 4th.
The Canadian Conference of Catholic Bishops (CCCB) has decreed that this is a Holy Day of Memorial (Optional) to be observed in Canada.