Fermin sits next to 3 phonetic neighbors — Herman, Fernando, and Ferris are the closest matches by sound. Most share Fermin's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"firm, steadfast"
"deliverer, savior"
"golden, made of gold"
"sky blue, cerulean"
"cinnamon-colored, auburn-haired"
"bold journey, brave traveler"
"geographic name from ancient Gaulish"
"sky, heaven"
"gracious, dear one"
"hidden valley river"
"who is like God?"
"from the long shore"
"prosperous companion"
"beloved of God"
"he saves, deliverer"
"heard by God"
"work-power, industrious ruler"
"golden, gilded"
Similar sound: These names share phonetic patterns with Fermin — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Fermin.
Rhythm: Fermin is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.