sentence1: In 1993 , when Platzer opened his second restaurant in Allentown , he changed the name to P. J. Whelihan to honor his grandfather Peter Joseph Whelihan .
sentence2: In 1993 , when Peter Joseph Whelihan opened his second restaurant in Allentown , he changed the name to P. J. Whelihan 's in honor of his grandfather , Platzer .