C. Pierre Pilote is the correct Answer!
Pilote was the Blackhawks Captain from 1961-1968 taking over for Ed Litzenberger who was traded after the Blackhawks won the 1961 Stanley Cup. Could you imagine the controversy today if the Blackhawks Captain would have been traded after the Blackhawks Stanley Cup in 2013?
Pilote of course had his number retired and is one of the All-Time Great Blackhawks.
Toews after this season will tie both Dirk Graham and Pilote for most seasons as a Blackhawks Captain.