Whither the Pool Room steamé?

The Montreal Pool Room has served steamés for a century although they haven’t had pool tables for decades. The new owner wants to start franchising. I’m not sure this is the way to keep the place alive, but then, I don’t run a fast food joint.

This piece says the Pool Room is the second oldest restaurant in town (1912), and Wilensky’s is the fourth (1928). What do we think are #1 and #3? Some links suggest the Auberge St‑Gabriel is the oldest, although I don’t know anything about its continuity.