Meaning and Name Origin
Isidore \i-sido-re, is(i)-dore\ as a boys' name is of Greek origin, and the meaning of Isidore is "gift of Isis". Isis was the principal goddess of ancient Egypt, and Isidore was a popular name among the ancient Greeks. There were several saints named Isidore. Isadora is the feminine form.
Isidore has 1 feminine form: Isadora.
Isidore is a rare given name for men but a somewhat popular last name for both adults and children (#71722 out of 88799, Top 81%). (2000 U.S. Census)
Presented below is the baby name popularity of Isidore for boys. Isidore reached its peak position of #446 in the U.S. during 1900-1909, but is not ranked currently. (Top 1000 Baby Names Statistics, 2014)
Below is a graphed analysis of the popularity of Isidore and associated names. Popular varying forms of Isidore are Dorian (#535 the previous year), Isidro and Isadore. Usage of these boy names reached its apex during 1900-1909 and has become significantly lower since, with the forms Isidro, Isidore and Isadore becoming less in vogue. Dorian (#535) is the most trendy baby name in this list. (Top 1000 Baby Names Statistics, 2014)