Cavan sits next to 3 phonetic neighbors — Gavin, Calvin, and Kevin are the closest matches by sound. Most share Cavan's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"little gentle one (variant of Kevin)"
"short form of Bradley or Bradford"
"rope maker"
"from the hedged land"
"ruler of the home, home ruler"
"conqueror"
"from Berlin (swampy area)"
"rhythmically invented name"
"neat, lovely, and blessed"
"wisdom, scientific wonder (modern cultural meaning)"
"sky (variant of Kai)"
"gift from God, he who is sent"
"small forest grove"
"Greece, Ionia (land of Greeks)"
"bright star in Aquila"
"knight, mounted warrior"
"from the ash tree valley"
"capricious, whimsical (related to Latin capra, goat)"
"warrior, champion fighter"
"creative spelling of Legend (things to be read, from Latin legenda)"
"broad meadow, wide clearing"
Similar sound: These names share phonetic patterns with Cavan — 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 Cavan.
Rhythm: Cavan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.