High Quality Content by WIKIPEDIA articles! The O`Brien Trophy, or O`Brien Cup, as labelled on the trophy itself, is a retired trophy that was awarded in the National Hockey Association (NHA) and the National Hockey League (NHL) ice hockey leagues of North America from 1910 to 1950. It was originally donated to the NHA by Canadian Senator M.J. O`Brien in honor of his son, Ambrose O`Brien. The Cup was fabricated using silver from an O`Brien mine.