Avalon sits next to 3 phonetic neighbors — Avery, Aveline, and Avelina are the closest matches by sound. Most share Avalon's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"isle of apples"
"maiden, young woman"
"jasmine flower"
"a day's travel, adventure"
"wool"
"feminine elaboration of George"
"truth, reason (ball)"
"from the Caecilius family"
"to harvest, reaper"
"beloved, sea of bitterness (Mary)"
"journey, day's travel"
"modern variant of Amy, the beloved"
"from Saint-Denis"
"strong, manly (via Andrew from Greek Andreas)"
"red king"
"first, beginning"
"bright, visible"
"of the Adriatic region"
"son of Adam"
"always, at all times, eternally"
"solemn, dignified"
Similar sound: These names share phonetic patterns with Avalon — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Celtic origins, giving them the same cultural heritage as Avalon.
Rhythm: Avalon is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.