Fidelio, a name of Latin origin, means 'devoted to' or 'faithful'. It is derived from the Latin word 'fides', which signifies trust and loyalty. Historically, Fidelio was used as a nickname for those who were considered steadfast and reliable. The name gained prominence in literature through Ludwig van Beethoven's only opera, 'Fidelio', where it serves as a symbol of unwavering love and devotion.
Fidelio was only given to six babies born annually in 1955.