Dukes of this region initially held court in a modest “stone house” that was greatly expanded by Barnim the Great. An 11-year-old brought attention to an artifact from this region inscribed with Harald Bluetooth’s name known as the Curmsun Disc. Around 1168, the warrior-bishop Absalon besieged a settlement in this region’s Cape Arkona. (-5[1])It’s not in modern Czechia or Slovenia, but while on a mission to convert this region’s population, Otto of Bamberg described ritual sacrifices to a three-headed idol of Triglav. (-5[1])The brothers Ratibor (-5[1])I and Wartislaw I (-5[2])name rival branches (10[1])of this region’s House of Griffin. (10[1])The Engelbrekt (10[1])Rebellion (10[2])deposed a duke of this region (10[1])who co-ruled with his great-aunt Margaret (10[1])I until 1397. (10[2])For 10 points, (10[1])Szczecin (10[1])(“sh’CHEH-cheen”) was the historic (10[2])capital (0[1])of what coastal region of Poland, (-5[1])whose duke Erik (10[1]-5[1])ruled the (10[1])Kalmar Union? ■END■ (10[4]0[2])