Premise: Walter Charles "Wally" Kilrea (February 18, 1909 – July 3, 1992) was a Canadian professional ice hockey left winger who played 9 seasons in the National Hockey League for the Philadelphia Quakers, New York Americans, Ottawa Senators, Montreal Maroons and Detroit Red Wings. He was born in Ottawa, Ontario. His brothers Hec and Ken also played in the NHL than his nephew Brian Kilrea.
Hypothesis: The Kilrea family produced at least four professional hockey players