I couldn't find any sort of Ju Jutsu on PEI. The only thing that comes close is Judo, there are several classes around the island:http://www.gov.pe.ca/infoipe/index.php3?number=55794&lang=E
They might be able to help you out. If they do very traditional Judo, they may even do the sword defences taught in the kata in Judo. As you may know, Judo was influenced by Jirgo Kano's study of Kito Ryu Ju Jutsu, amongest other things.
The only styles of karate I could find on the island were Shotokan & Goju-Ryu. I was looking for Wado Ryu, as although a karate style, almost half of it is trad. ju jutsu.
Try those Judo schools to see if they know any Ju jutsu classes in the area.