A classic variation of the name Isidore, both Isadore and Isidore were equally popular at their peak in the 1910s. They were historically used among Jewish families — Isidore and Isadore were often used as Americanizations of Jewish names such as Israel and Isaac.

Starbaby name that might prove too supercharged for real life, but if like director Robert Rodriguez you're interested only in boys' names starting with R, you may need to add Rocket (and Rebel and Racer) to your list.