If one version of the claim is true, many of John F. Kennedy's ancestors weren't even Irish.

Millions of people have heard that almost all American Presidents are related to each other and descendants of one English king. Is that true? What does this claim say about our understanding of kinship, power and genealogy?

Music: "Angevin" (a name for King John's dynasty). Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0. http://creativecommons.org/licenses/by/3.0/

All other attributions are either on screen, or posted in the narrative attributions document: https://docs.google.com/document/d/1LahdyiTAXb7R5_GzHN7KIDTvKP8iJBNcmJCDC6CZPF8/edit