Ellowen sits next to 4 phonetic neighbors — Elowen, Eloise, and Rowen are the closest matches by sound. Most share Ellowen's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"elm tree"
"hazel tree (via Hazel)"
"calm hero, steady and composed"
"beautiful being, graceful"
"fair one, bright, handsome"
"my father rejoices"
"island"
"victory"
"good mind, beautiful mind"
"fruit that cries (expels water)"
"born on Christmas Day (via Natalie connection)"
"apple moon"
"yawning emptiness, vast chasm"
"Myrtle tree; bride"
"righteous, virtuous, pious"
"Modern invented name with no traditional etymology"
Similar sound: These names share phonetic patterns with Ellowen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Cornish origins, giving them the same cultural heritage as Ellowen.
Rhythm: Ellowen is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.