There is also a Robert Looney who died 2 Sept 1699 and his will says that Robert has an only son named William who Robert named as his Exer. This shows that there was another William Looney living at the same time in the same area and if the birth record is correct then this one was christened 28 Oct 1660 making him 39 years old when his father died.
The William Looney who married Jony Quillease appears to have died 18 Jan 1718 and his will says he has two son's, John and William. He also names Grandchildren: Wm, Ann, Margery and Betty (Elizabeth). These grandchildren being the children of his son John. His son William does not appear to have any children of his own at this point.