 the duchy of cieszyn (), also duchy of teschen () or duchy of tÄÅ¡Ã­n (, ) was an autonomous silesian duchy centered on cieszyn (teschen) in upper silesia. during the feudal division of poland it was split off with the duchy of racibÃ³rz in 1281 and ruled by silesian dukes from the piast dynasty since 1290.panic 2002, 6. the ducal lands initially comprised former lesser polish territories east of the biaÅa river, which about 1315 split off again as the
Cieszyn_Silesia Duchesses_of_Teschen Duchies_of_Silesia Dukes_of_Teschen Former_countries_in_Europe Former_principalities Former_vassal_states Historical_regions_in_Poland Historical_regions_in_the_Czech_Republic States_and_territories_disestablished_in_1742 States_and_territories_disestablished_in_1918 States_and_territories_established_in_1281 States_and_territories_established_in_1290