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"
"state of peaceful calm"
"sun ray, bright light"
"my God is an oath"
"son of Kenneth"
"diminutive of Harriet (home ruler)"
"gracious, dear, beloved"
"flowering one"
"born at dawn or daylight"
"son of Adam"
"earth"
"famous, illustrious"
"descendant of Leannán"
"heaven (spelled backwards)"
"one who will rise again"
"oak tree, pool"
"eternal life (early Christian use)"
"Pacca's town"
"lady, queen"
"each of the two"
"peace, fruitfulness"
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.