Cecilio sits next to 4 phonetic neighbors — Cecilia, Basilio, and Emilio are the closest matches by sound. Most share Cecilio's Spanish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"blind"
"king, royal"
"representative, lieutenant"
"God will increase, God will add (José)"
"divine presence"
"extended form of Zia"
"mind-bold"
"son of Taveiro; from the hermitage"
"beloved of God"
"staff bearer, rod bearer"
"God is my strength"
"the new house"
"gentle, tame"
"bright fame"
"treasure of God"
"eighth (as short form of Octavian)"
"God has created / God has purchased (from Elkanah)"
"victor's crown"
"spear ruler (from Gerardo)"
"given, gift"
"lion of men"
Similar sound: These names share phonetic patterns with Cecilio — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Cecilio.
Rhythm: Cecilio is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.