Fidel

Fidel is a boy's baby name of Spanish origin, from the Latin fidelis, meaning 'faithful, loyal.' It has been used in Spanish-speaking countries for centuries, and is also a saint's name — Saint Fidel of Sigmaringen was a 17th-century martyr.

In modern times, the name is inevitably associated with Fidel Castro, which has made it a polarizing choice in the U.S. yet kept it in steady use among families honoring its deep meaning of faithfulness.