Oswald Marian Balzer (23 January 1858 in Chodorów – 11 January 1933 in Lwów) was a Polish historian of law and statehood, one of the most renowned Polish historians of his times. In 1887 he became a professor at the University of Lwów. Between 1895 and 1896 he also briefly served as its rector. Since 1891 until his death he was also the director of City Archives in Lwów. His best work is Genealogia Piastów (1895). In 1888 he was offered a seat in the Polish Academy of Skills, as well as several other scientific societies, both in Poland and abroad. In 1901 he founded the Society for the Support of Polish Science in Lwów (Towarzystwo dla Popierania Nauki Polskiej we Lwowie), the first such society in the city, later to be renamed to Lwow Scientific Society (1920). Among the fields of his studies were the history of Polish statehood and Poland's historical law, as well as the early history of Slavic states. He was buried in the Łyczakowski Cemetery. Works Kancelarye i akta grodzkie w wieku XVIII (1882) Geneza Trybunału Koronnego (1886) Regestr złoczyńców grodu sanockiego: 1554–1638 (1891) Walka o Tron krakowski w latach 1202–1210/11 (1894) Genealogia Piastów (1895) O następstwie tronu w Polsce (1897) Historia ustroju Austrii w zarysie (1899) O zadrudze słowiańskiej (1899) Z powodu nowego zarysu historii ustroju Polski (1906) O Morskie Oko. Wywód praw polskich przed sądem polubownym w Gradcu (Grazu)] (1906) O kilku kwestiach spornych z historii ustroju Polski (1907) Państwo polskie w pierwszym siedemdziesięcioleciu XIV i XVI wieku (1907) Skartabelat w ustroju szlachectwa polskiego (1911) Stolice Polski 963–1138 (1916) Skarbiec i Archiwum koronne w dobie przedjagiellońskiej] (1917) Królestwo Polskie 1295–1370, t. I-III (1919–1920) Narzaz w systemie danin książęcych pierwotnej Polski (1928) Corpus iuris Polonici 1506–1522, t. III oraz cz. I tomu IV obejmująca lata 1523–1534 (1906; 1910) Porządek sądów i spraw prawa ormiańskiego z r. 1604 (1912) Przegląd palatynów polskich w czasie panowania Piastów, w: Pisma pośmiertne, t. III (1937) References 20th-century Polish historians Polish male non-fiction writers Historians of Poland Polish genealogists Members of the Lwów Scientific Society 1858 births 1933 deaths People from Khodoriv Academic staff of the University of Lviv University of Lviv rectors 19th-century Polish lawyers 19th-century Polish historians 19th-century Polish educators 20th-century Polish lawyers 20th-century Polish writers 20th-century Polish educators Burials at Lychakiv Cemetery Recipients of the Order of the White Eagle (Poland)