My understanding is that this was drawn in 1905 in France from family papers. It includes my branch which went to the USA in 1846. And even a few of the children born here. So it shows the families kept in contact at least in 1905! The original is on a wall of one of the ancestor's homes that is still standing today.
My cousin went to visit and do research. Upon arriving in the town she asked about the graves of her ancestors and the next thing she knows she is invited to the home of the mayor who is a cousin! The town basically turned out to greet her. This was in the 1980s or 1990s.
I call her my genealogy fairy godmother because meeting her added 4 centuries of people and research with sources to my tree!
I have added another 2 centuries. And I have another cousin who is actively working to take this back another couple of centuries working with historians throughout Europe.