Gauja Estonians are most likely native to their homelands. There are mentions of Chudes living in Adzele county from 12th centuryRussiansources. There are later mentions of them living in the Gauja river area. According to August Wilhelm Hupel's book Topographische Nachrichten von Lief und Ehstland there were about thousand Estonians in 1777. Anders Johan Sjögrenclaimed that there were 2,600 Gauja Estonians in 1849. Heikki Ojansuu counted only 116 when he made a trip to an area in 1911. According to Ojansuu's theory, Gauja Estonians were refugees of the Great Northern War from Southern Estonia, but today this theory has been largely discredited. According to Harri Moora and Paul Ariste, Gauja Estonians were the original inhabitants of their homelands.