Marianna sits next to 5 phonetic neighbors — Mariana, Marianne, and Arianna are the closest matches by sound. Most share Marianna's Italian-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"grace and drop of the sea (Maria + Anna)"
"pure, innocent"
"dear to Saturn"
"estate of the fifth son"
"beautiful sky"
"ugly-headed (original Gaelic)"
"honor, victory"
"chalk wharf, chalk port"
"from Massy, Normandy"
"marshy clearing"
"worthy of praise"
"gray battle maiden"
"sky, heaven"
"animal horns"
"with a web over her face"
"noble kind, noble nature"
"Tatas homestead, cheerful settlement"
"heaven, sky"
"frequenter of churches"
"honor (from Honoria)"
"graceful, beautiful"
Similar sound: These names share phonetic patterns with Marianna — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin/Hebrew compound origins, giving them the same cultural heritage as Marianna.
Rhythm: Marianna is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.