Siar sits next to 4 phonetic neighbors — Sheer, Ciar, and Seer are the closest matches by sound. Most share Siar's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"westward, to the west"
"from the Afton river"
"ancient, enduring"
"raven"
"lion-like"
"dark one, dark-complexioned"
"God is gracious"
"cloud"
"guardian of riches"
"red king"
"dark, full; complete darkness"
"claw, swift predator (via Talon)"
"archer, warrior of the yew"
"from Dyce, Aberdeenshire"
"settlement on the River Ren"
"vigilant, watchful"
"fair-haired one"
Similar sound: These names share phonetic patterns with Siar — 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 Siar.
Rhythm: Siar is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.