Willow sits next to 3 phonetic neighbors — Willa, Billow, and Pillow are the closest matches by sound. Most share Willow's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"From Old English 'welig', the willow tree; a nature name associated with flowing water and healing"
"grace, feminine beauty"
"ugly head (from ceann donn)"
"king of elves"
"star"
"song, tune, music"
"duck, waterfowl"
"God will add, God shall increase"
"Star that suddenly increases dramatically in brightness"
"of the Caecilian family (Roman gens)"
"just, righteous"
"free woman"
"new growth, spring"
"God has answered me"
"daily path, life's adventure"
"from the town of Paisley, meaning church or basilica"
"flute player, pipe player"
"noble kind, of noble birth"
"little rose"
Similar sound: These names share phonetic patterns with Willow — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have English origins, giving them the same cultural heritage as Willow.
Rhythm: Willow is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.