Kilyan sits next to 5 phonetic neighbors — Killian, Cillian, and Kilian are the closest matches by sound. Most share Kilyan's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"church, monastic cell"
"small flame, little fire"
"flower bud casing"
"land beside the road"
"son of the sea, born from ocean waves"
"sun god"
"speckled, freckled"
"light, illumination"
"city of Athena; city of wisdom"
"small place of worship"
"fame and glory"
"people of the riverside forest"
"little fire"
"white hawk, battle hawk"
"God is my help (from Hebrew Ezra) + real/royal suffix"
"son of Hutch (Hugh)"
"God is gracious (short form of Johannes)"
"of the D'Evreux Norman noble family"
"son of Tule"
"Mann's people, son of the man"
"scorching, glowing"
Similar sound: These names share phonetic patterns with Kilyan — 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 Kilyan.
Rhythm: Kilyan is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.