Blon sits next to 3 phonetic neighbors — Blanche, Blonde, and Flon are the closest matches by sound. Most share Blon's French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"fair-haired, blonde"
"father's joy"
"Rosebush; rose garden"
"golden one"
"pledge, oath"
"pure, unspoiled, original"
"hope, aspiration"
"precious gift"
"Possibly from Eldon (noble hill, Old English) combined with feminin..."
Similar sound: These names share phonetic patterns with Blon — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old French/Frankish origins, giving them the same cultural heritage as Blon.
Rhythm: Blon is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.