The most difficult precedent for Donoghue was "Mullen v AG Barr & Co Ltd", a recent Court of Session case. In "Mullen", two children, John and Francis Mullen, and Jeanie Oribine had separately found dead mice in their bottles of ginger beer, manufactured by AG Barr & Co Ltd, and claimed to have become ill through drinking the tainted liquid. In separate hearings in Glasgow and Greenock Sheriff Court respectively, Orbine was successful in claiming compensation while the Mullens were not. The losing parties of both cases appealed to the Court of Session.