Tilly sits next to 4 phonetic neighbors — Millie, Lily, and Tillie are the closest matches by sound. Most share Tilly's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"strength in battle"
"eagle valley"
"Cyneburg's field, royal forest clearing"
"gift from God"
"wise child, elder sister"
"from Quincy, France"
"cart driver, transporter"
"God has favored me"
"strong, vigorous"
"God's gift of grace"
"compassionate friend, companion"
"meadow of quivering aspens"
"noble, high meadow"
"defender of mankind"
"vine, climbing plant"
"descended from Jupiter"
"breeze, breath, air"
"rye field"
"ash tree pool"
"pet form of Sarah"
"youthful goddess, keeper of immortality"
Similar sound: These names share phonetic patterns with Tilly — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Germanic origins, giving them the same cultural heritage as Tilly.
Rhythm: Tilly is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.