EV DYLE HENRY (JIM)

I am looking for my grandfather's family for my mother who has cancer.her father's name was EV DYLE HENRY and his mother was MARY E ?
his father was HARMON HENRY?my grandfather died in 1980-81.He had lived in California from the 60's on that I know of.ANY info or suggestions, I would be grateful.
Thank you very much.Shannon