Ennis sits next to 3 phonetic neighbors — Dennis, Innis, and Elvis are the closest matches by sound. Most share Ennis's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"island"
"wise protector, counselor-guardian"
"gift of God"
"luminous, bright"
"from Carlisle"
"legacy, something handed down"
"lake, pool, waterfall"
"gift of God"
"illusion, magic"
"meadow clearing"
"the Lord is righteous"
"one who covers"
"Brock's settlement (place name origin)"
"ruler of the army (via Walter)"
"manly, masculine"
"stone sword, sword stone"
"may God protect"
"bright settlement"
"the West, where the sun sets"
"royal and bold"
Similar sound: These names share phonetic patterns with Ennis — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Irish Gaelic origins, giving them the same cultural heritage as Ennis.
Rhythm: Ennis is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.