This chart was prepared by Henry Louis Gates Jr., American Ancestors and the Cuban Genealogy Club of Miami. It reflects the best-known research as of the time of publication. Design by Nick Sheedy.

Harvard University Prof. Henry Louis Gates Jr. takes a deep dive into the pope's past in New York Times Magazine piece.

According to Gates Jr., Pope Leo is also related to Boucher de Grandpre, who fought against the British during the Revolutionary War with the Louisiana militia, as well as Antonio José de Sucre, who opposed Spanish forces during the Battle of Ayacucho.

Through a distant maternal ancestor, who was born in the 1590s, Pope Leo is ninth cousins, various times removed, with some well-known figures, including Pierre and Justin Trudeau, Hillary Clinton, Angelina Jolie, Justin Bieber, Jack Kerouac and Madonna.

As the Chicago White Sox honor Pope Leo XIV with an outdoor Mass on Saturday, his 2005 World Series seat has become a pilgrimage site for the faithful.

The city of Chicago is ready to celebrate Pope Leo XIV, the newly elected spiritual head of the Roman Catholic Church.