The name Kelleigh means Bright-headed/redheaded and is of Irish origin. Kelleigh is name that's been used by parents who are considering unisex or non-gendered baby names--baby names that can be used for any gender.
From the Irish surname "Ó Ceallaigh" meaning “bright headed” or red-headed.
Variation of the name Kelly. David E. Kelley, screenwriter.