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"
"free woman, of the Franks"
"alder tree grove (from Gaulish via Vernon)"
"bare hill"
"Variant of Joan/Joanne, from Hebrew Yohanan meaning God is gracious..."
"little Jon, feminine form of Jon"
"blessed, son (Hebrew root)"
"Ruler with a spear; from Germanic ger (spear) and wald (rule)"
"little cottage, humble dwelling"
"rounded growth on tree, knotty wood"
"lilac, bluish"
"noble strength (via Audrey root)"
"resolute protector"
"joy, bliss"
"noble, patrician"
"Island (from the Scottish island of Tiree)"
"spear"
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.