 Lavergne died in office at Ottawa in 1935 and was buried in Arthabaska, Quebec (today part of Victoriaville).Though never firmly proven, there is a substantial amount of conjecture that Armand Lavergne was the illegitimate son of Prime Minister Sir Wilfrid Laurier.It was widely speculated that his mother, Émilie, had a long-standing extramarital affair with Laurier, her husband's law practice partner.