Meaning and history
Isidore comes from the Greek name Ἰσίδωρος (Isidoros), meaning “gift of Isis,” from the Egyptian goddess Isis and Greek δῶρον (doron), “gift.” Saint Isidore of Seville was a 6th-century archbishop, historian, and theologian. The name has never been widely popular among Christians in the English-speaking world, but it has long been common among Jews, who have used it as an Americanized form of names such as Isaac, Israel, and Isaiah.
Isidore moved from #865 to #896 for boys between 1926 and 1928. Its highest annual birth count came in 1919, with 183 births.