Isidorus

Isidorus is the Latinized form of the Greek given name Isidoros. The name is traditionally interpreted to mean “gift of Isis,” combining the Greek word for gift with the name of the Egyptian goddess Isis, though its exact origins are debated. The form has given rise to variants such as Isidore in English and Isidro in Spanish, and it appears in medieval and early modern Latin texts to refer to multiple individuals.

Isidorus of Miletus (often called Isidorus Milesius) was a Greek architect active in the 6th century who contributed to the design of the Hagia Sophia in Constantinople, alongside Anthemius of Tralles. The building was completed in 537 and remains a landmark of Byzantine architecture.

Saint Isidore of Seville, known in Latin as Isidorus Hispaliensis (c. 560–636), was the archbishop of Seville and a prolific scholar. His Etymologiae and other works helped shape medieval Latin learning, and he is honored as a Doctor of the Church in Western Christianity.

Saint Isidorus of Pelusium was a 4th- to 5th-century monk and ascetic from Egypt. He is remembered for his writings and teachings on Christian discipline and spiritual life, contributing to early Christian monastic thought.

In historical usage, Isidorus appears across regions influenced by Greek, Latin, and Christian traditions. The name’s legacy extends into modern times through continued use and through variant forms such as Isidore and Isidro.