Tintagaelsing is a city-country across the mountains from Jaden. Mages are considered the lowest of the low there, and forced to dress in low-quality color-coded clothing to match their Elements. Due to their low status, Gaelsing Mages have intermarried with non-Mages less than other nations, so the average Class among them is higher than even Jaden Mages.
Gaelsing Mages' energy is used as a power source for the city. When Gabriel finds out that the Gaelsing Mages are opressed, he rescues as many as he can, taking them back to Castle Jaden.