User blog comment:Athena jackson/The Seven Half-bloods/@comment-4183272-20110731220655

I think Frank is a son of Liber his name means "FREE MAN" and Liber is the god of freedom he's name means "THE FREE ONE" according to wiki Hazel i think is a daughter of Ceres/Demeter because her name is the same as a tree/plant and that's obiously related to agriculture