Thanks indeed for your message. I am afraid I haven't managed to trace this family so far forward, but Yorkshire seems hopeful. I was told by someone that there are Chipchase graves in Danby Wiske (near Northallerton, Yorks.) I haven't managed to get down there to have a look yet, but if/when I do, will let you know any results. I believe there is a Yorkshire Quakers we site referring to a project at ?Hull University. You might find some help there?