Duchy of Masovia was created in 1138.
Duchy of Masovia ended in 1526.
Masovia Governorate was created in 1837.
Corps Masovia Königsberg - Potsdam - was created in 1823.
Duchy of Racibórz was created in 1172.
Duchy of Westphalia was created in 1180.
Duchy of Bielsko was created in 1572.
Duchy of Głubczyce was created in 1172.
Duchy of Zator was created in 1454.
Duchy of Limburg was created in 1065.
Duchy of Friuli was created in 569.
Duchy of Żagań was created in 1274.
Duchy of Württemberg was created in 1495.