Marshella sits next to 5 phonetic neighbors — Marcella, Marchella, and Marishel are the closest matches by sound. Most share Marshella's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"Of the sea, warrior; defender of the sea"
"faith"
"free person, strong one (via Carla/Carl)"
"Possibly a variant of Teresa/Therese, meaning to reap or harvest"
"wise counsel, gentle (ewe)"
"God is my oath"
"faith"
"honoring God, one who honors God"
"prince, hill settlement"
"shining renown"
"of the alder tree"
"one who follows at the heel"
"Gaelic form of Jane/Jean"
"light, famous"
"pure, clear"
"pure"
"messenger of God; angel"
Similar sound: These names share phonetic patterns with Marshella — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old French via Marshall origins, giving them the same cultural heritage as Marshella.
Rhythm: Marshella is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.