In other news, a Yale historian has uncovered a letter that supports the theory that Yale’s Skull and Bones society stole the skull of Native American leader Geronimo. According to legend, Skull and Bones members — including Prescott Bush, President Bush’s grandfather — dug up Geronimo’s remains from his burial plot in Ft. Sill, Oklahoma.. The letter, written by a Skull and Bones member in 1918, says group members took skull and other remains and buried them in their Yale clubhouse.