Kentucky Revised Statutes Title L. Kentucky Penal Code § 530.020.Incest

(1) A person is guilty of incest when he or she has sexual intercourse or deviate sexual intercourse, as defined in KRS 510.010, with a person whom he or she knows to be his or her parent, child, grandparent, grandchild, great-grandparent, great-grandchild, uncle, aunt, nephew, niece, brother, sister, first cousin, ancestor, or descendant. The relationships referred to herein include blood relationships of either the whole or half blood without regard to legitimacy, relationship of parent and child by adoption, relationship of stepparent and stepchild, and relationship of stepgrandparent and stepgrandchild.