Bright-headed or church
Kyllian is a modern spelling variant of the Gaelic name Cillian. It is traditionally thought to derive from the word 'ceall', meaning church, or 'ceallach', meaning bright-headed or strife.
Less common today
Kyllian isn't in the latest US Top 1000. It last peaked at #3,170 in 2023.
French professional handball player
US births per 5-year period, 1990βpresent (SSA data).