In response to John R's search for Snyder family members young David now lives in St. Lambert and Paul is on Nuns Island. Both boys own and operate a company known as Edge International. Paul is a motivational speaker while David does educational training and employee evaluation. They have several International clients and travel extensively in North America and occasionally in Europe.
Unfortunately after the passing of David and Roz there were no marbles for the boys to inherit. The ones your neighbor Mr. Dore found could well have been Gert's since I have heard, in the past, many a customer say "That woman has lost her marbles".