Presidential Family Forest CD-ROM showing all the U.S. presidents and their wives, with some ancestries going back a claimed 2000 years, linking many of the presidents to European royal families. This collection shows how many of the U.S. presidents were related to each other. Other "family forest" CD-ROM disks include The Founders and Patriots Family Forest, a web of family ties that includes many thousands of people who actually founded the United States and/or fought in the American Revolution, and the Delaware Family Forest, a database of tens of thousands of people from Maryland, Pennsylvania, Virginia, and Delaware.