Philip Johan von Strahlenberg

Philip Johan von Strahlenberg (1676–1747) was a Swedish officer and geographer of German origin who made important contributions to the cartography of Russia. he was the first geographer, who came up with the "Ural border" idea, which determined the Ural mountains and river as the eastern borders of the European continent. Then later he fixed it with the approval of Russian Tzar.

Strahlenberg was born in Stralsund, which then belonged to Sweden, and his original name was Philip Johan Tabbert. He joined the Swedish army in 1694 and was promoted captain in 1703. In 1707, he was ennobled and took the name von Strahlenberg.

Taking part in the Great Northern War, he was captured by the victorious Russian forces during the Battle of Poltava in 1709. As a prisoner of war, he was sent to Tobolsk, where he lived from 1711 to 1721. During this time, he studied the geography of Siberia and the anthropology, languages and customs of its native tribes. After returning to in 1730, he published his book Das Nord- und Ostliche Theil von Europa und Asia (North and Eastern Parts of Europe and Asia) with the results of his studies. The book was well received and soon translated into English, French and Spanish.

As part of his book, Strahlenberg and Johan Anton von Matérn drew new maps of all of Russia - a formidable task in itself. He also suggested a new border between the continents of Europe and Asia in Russian territory. This border follows the peaks of the Urals, then branches off westwards along a minor mountain range, follows the hilly west bank of Volga river downstream to the 49th degree of latitude and Don river thereon to the Black Sea.Vasily Tatischev claimed that it was at his suggestion that Strahlenberg adopted the idea. See Boundaries between continents for the current political and geographical debates about the Europe-Asia border.

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