an Entity references as follows:
Alexander Hilferding also spelled Aleksandar Fedorovich Giljferding (Russian: Александр Фёдорович Гильферди́нг; 14 July 1831 in Warsaw, Kingdom of Poland – 2 July 1872 in Kargopol, Olonets Governorate, Russian Empire) was a Russian Imperial linguist and folklorist of German descent who collected some 318 bylinas in the Russian North.