Kowen sits next to 5 phonetic neighbors — Cohen, Cowan, and Owen are the closest matches by sound. Most share Kowen's Scottish/Irish Gaelic 'cobhan'-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"hollow, small cavity"
"noble strength"
"bard, poet (from Irish Daimhin)"
"wise one (from Sionann mythology)"
"settlement at the clean/pure place"
"healer (via Jason/Greek root)"
"of Mars, warlike"
"sad, sorrowful"
"noble born"
"gift (modern American coinage)"
"blooming, flourishing"
"high mountain, exalted"
"gray valley, son of the gray one"
"place name: town in Pembrokeshire, Wales"
"highest point in the sky, directly overhead"
"wine's town, friend's settlement"
"proud descendant, son of the proud one"
"American coinage, origin debated"
"gift of God, gift of Yahweh"
"beautiful fragrance"
Similar sound: These names share phonetic patterns with Kowen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Scottish/Irish Gaelic 'cobhan' origins, giving them the same cultural heritage as Kowen.
Rhythm: Kowen is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.