The descendants of Geronimo, the Apache chief whose skull is rumored to be part of the rituals of Yale’s Skull and Bones Society, filed a lawsuit Tuesday demanding the return of their ancestor’s remains.

For only the second time in two decades, neither presumptive nominee for U.S. president is an alumnus of Yale’s oldest and most secretive senior society. (The only other time in recent history that happened was in 1996, when Bill Clinton faced Republican Bob Dole.)