Students review background information (accessed online) about the murders of five members of an Irish immigrant family (the Donnellys) in rural southwestern Ontario in 1880. Students then examine primary and secondary source documents to find evidence to support the theory that religious hatred was an underlying cause of the conflict and determine if there is sufficient evidence to justify a more extensive examination of this theory.

This resource is part of the series Great Unsolved Mysteries in Canadian History: Mystery Quests.