Gregor's Joy is a city in Maar Sul. It is named after the Scun explorer Gregor. After his folly in Gregor's Folly, Gregor sailed further downstream the Thisisa River and built another castle. It did not sink. Hence the reference to joy in the city's name. The city fell to the Proninist Party in 1016 AE but was liberated a year later by the Grand Alliance.