William and Jeannie (Dad's parents), and William and Ivy (Mum's parents). I've always been rather amused that both my grandfathers had the same name. They both called their sons William too! Thanks to Prince William, William seems to be quite popular still. However, I don't think too many parents are calling their daughters Jeannie and Ivy.
I find it fascinating how, like clothes and interior décor, names go in and out of fashion. When I was young, names like Jenny, Leanne, Louise, Julie and Carolyn were so popular, but now you hardly ever hear of them.