Donald McGonagle is shot and killed.

November 18, 1969

James “Whitey” Bulger guns down McGonagle, who mistook him for his twin brother Paul. Bulger corrects his mistake by allegedly killing Paul McGonagle in November 1974 and, more than 20 years later, Bulger goes into hiding accompanied by the McGonagles’ sister-in-law, Catherine Greig,

Sources
  • Boston Herald