Cirilla sits next to 3 phonetic neighbors — Camilla, Cyrilla, and Stella are the closest matches by sound. Most share Cirilla's Polish-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"lordly, mistress"
"mistress, lady, the lady of the house"
"grace, favor"
"bright, shining light"
"of the dawn, daybreak"
"Of the sea, sea maiden"
"from the tower, elevated"
"bright, shining light"
Similar sound: These names share phonetic patterns with Cirilla — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Greek Kyrillos origins, giving them the same cultural heritage as Cirilla.
Rhythm: Cirilla is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.