Waterloo University is set to repatriate a box of 18th-century bone fragments to a New York community that did not even know the bones were missing.

The bones came from Fort William Henry, a former British fort that was the scene of a brutal massacre of British troops by Huron warriors during the Seven Years’ War, an events depicted in the film The Last of the Mohicans.

Following a 1950s archaeological dig, the dug-up skeletons of the dead British soldiers were put on display as part of a full-scale reconstruction of the fort, which is located in Lake George, New York....