It's the stuff of legends: an elite secret society that includes what would become some of the most powerful men of the 20th century allegedly invading the grave of an Apache chief to steal his skull for fraternal rituals. It's also the stuff of a new lawsuit filed Tuesday by descendents of that Apache chief.

On the 100th anniversary of the death of Geronimo, 20 of his blood relatives have asked the courts to force Yale University and the school's secret organization, Skull and Bones, to release his remains for return to his native land and a proper burial.

The lawsuit also names President Obama, Defense Secretary Robert Gates and Army Secretary Pete Geren as defendants because they are responsible for maintaining Geronimo's remains on a U.S. Army base in Oklahoma, the group said.