Marcelaine sits next to 4 phonetic neighbors — Marceline, Marcella, and Madeleine are the closest matches by sound. Most share Marcelaine's French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"little warrior, dedicated to Mars"
"rounded growth on tree, knotty wood"
"spear ruler"
"variant of diminutive feminine names"
"bad settlement"
"flower"
"free woman, of the Franks"
"noble strength (via Audrey root)"
"God is gracious"
"God is gracious (from Jean component)"
"feminized form of Burl with melodic -line suffix"
"resolute protector"
"born in spring (from Latin verna variant)"
"God is gracious"
"Variant of Joan/Joanne, from Hebrew Yohanan meaning God is gracious..."
"the dawn, daybreak"
"From the north; a northerner"
"Island (from the Scottish island of Tiree)"
Similar sound: These names share phonetic patterns with Marcelaine — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Marcelaine.
Rhythm: Marcelaine is a 4-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.