Joseph-Adolphe Chapleau, former Quebec premier and lieutenant governor, for whom all three of the above were named
Chapleau Ojibwe forefathers were not, however, signatories to the Robinson Treaties, partly because Benjamin Robinson did not take the time to meet with inland First Nation communities and partly because inland First Nation leaders were reluctant to travel as a result of a cholera outbreak in 1849.
From the early-1960s to mid-1970s, Highway 129 was designated as the Chapleau Route of the Trans-Canada Highway.