http://www.textiletraditionsofalmonte.com/
http://www.quiltingquarters.ca/
http://www.therunningstitch.ca/
http://www.gardenthymequiltfabricandgifts.ca/
http://www.sewforit.ca/
http://www.perthfabrics.com/
http://www.sewcrafty.ca/
These are all websites for quilt shops in and around the Perth/Ottawa area, which are sort of near where you might be going.
There is a website for Ontario quilt shops at:
http://quiltersresources.net/shops_on.html
which is where I found these shops listed. I tried to pick the ones that were relatively near Westport. The one at Rideau Ferry is likely the closest.
Good luck, enjoy the trip and the opportunity!