John Elton (d. 1751), adventurer in Persia, was sent by the Russian government in 1735 to assist in the Orenburg expedition in the rank of a sea captain. During this mission he was sent to explore Lake Aral, but was hindered by the Tartars from reaching the lake. He then employed himself in surveying the south-eastern frontier of Russia, particularly part of the basins of the Kama, Volga, and Jaik. Returning to St. Petersburg in January 1738, he took umbrage at not obtaining promotion and quitted the Russian service. In the same year he proposed to some of the British factors at St. Petersburg to carry on a trade through Russia into Persia and central Asia by way of the Caspian Sea. Associating himself with Mungo Graeme, a young Scot, he obtained credit for a small cargo of goods suitable for Khiva and Bokhara. They left Moscow on 19 March 1738-9, and, proceeding down the Volga from Nijni Novgorod to Astrakhan, embarked on the Caspian for Karagansk. At Karagansk they received such unpromising accounts of the state of the steppe that they resolved to continue their voyage to Resht in Persia. Elton was successful in finding a good market and in obtaining a decree from the shah granting them liberty to trade throughout Persia, and extraordinary privileges. He persuaded the Russia Company to take up his scheme, and in 1741 an Act of Parliament sanctioning the trade was passed. In 1742 two ships were built on the Caspian, and Elton was placed in command of the first completed. These vessels carried the English flag, which, however, Anthony Jenkinson claimed to have first displayed on the Caspian about 1558. The apprehensions of the Russian court were, however, excited by the intelligence that Elton was building ships on the Caspian, after the European fashion, for the Persian sovereign, Nadir Shah. On receipt of the intelligence the Russia Company despatched Jonas Hanway to make inquiry concerning Elton's proceedings. Hanway arrived at Resht on 3 December 1743 and found Elton earnestly pressing forward the construction of Persian vessels. The Russian court, indignant at Elton's action, refused to countenance the Caspian trade and ruined the expectations of the Russia Company.