Kennan sits next to 5 phonetic neighbors — Kenan, Keenan, and Kenneth are the closest matches by sound. Most share Kennan's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"possession, acquired"
"Son of Nils (Neil); son of the champion"
"heavenly city, promised land"
"brilliantly noble"
"divine, godly"
"of noble Gascon origin"
"knight of Jerusalem, Crusader hero (by association)"
"comforted, consoler"
"little dark one"
"law settlement, from Lexington"
"one who carries the treasure"
"good friend, friend of God"
"mercy, eternal"
"courageous, valiant"
"thatcher, roofer"
"he who holds firm the good"
"friend, companion"
"of the forest, from the wood"
"large homestead, big village"
"uncertain — possibly invented or from an undocumented oral tradition"
Similar sound: These names share phonetic patterns with Kennan — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Kennan.
Rhythm: Kennan is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.