Slender or fair; derived from OCeallaigh
Keilly is a modern American phonetic variant of the Irish surname Kelly. It originates from the Gaelic name O'Ceallaigh, which traditionally translates to 'descendant of Ceallach,' meaning war, strife, or bright-headed.
Less common today
Keilly isn't in the latest US Top 1000. It last peaked at #3,392 in 2011.
US births per 5-year period, 1990–present (SSA data).
