Complex sentence: The longing of the narrator for Sherbrooke conflicts with the date of 1778, as the town of Sherbrooke, Nova Scotia was not founded until 1815; likewise, Sherbrooke, Quebec did not exist until 1818.
Split into simpler sentences: The longing of the narrator for Sherbrooke conflicts with the date of 1778, as the town of Sherbrooke, Nova Scotia was not founded until 1815. Likewise, Sherbrooke, Quebec did not exist until 1818.