Eaven sits next to 5 phonetic neighbors — Evan, Eavan, and Haven are the closest matches by sound. Most share Eaven's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"God is gracious"
"dweller at the wood"
"Valley of the linden trees"
"famous warrior (from Louis/Ludwig)"
"valley dweller"
"Trojan hero, ancestor of Rome"
"work and power"
"automotive brand name"
Similar sound: These names share phonetic patterns with Eaven — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew via Welsh origins, giving them the same cultural heritage as Eaven.
Rhythm: Eaven is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.