Kozlyaninov Leonid Lavrovich 
(07(19).04.1867–01(14).05.1911)

Russian naval officer, hydrograph, a descendant of Admiral Timofey Gavrilovich Kozlyaninov - a hero of the Gogland battle with the Swedes. 
He graduated from the naval school and became a midshipman on the team of the frigate “General-Admiral”, at which the Grand Duke George Alexandrovich made overseas voyage. Then he served on the frigate "Minin", the battleship "Navarin", gunboat "Gremyashchy". During the occupation of Crete Kozlyaninov was part of the international occupation squad. This period includes his first correspondence, published in the newspaper "New Time". 
In the years 1900-1901 Kozlyaninov served in the Far East, participated in the seizure of the port of Yingkou, and then, as commander of the destroyer "№208", led the survey of the Liaokhe River, becoming its first explorer. In the spring of 1901, he descended on a Chinese junk from the headwaters of the river near the border with Mongolia to its very mouth. Suffering from cold rains and winds, reflecting the constant attacks of river pirates, the Hunhuz, the Kozlyaninov team carried out an accurate survey and measurement of the river, identified 38 astronomical sites. 
In the same year, by order of Admiral Alekseev Kozlyaninov, he was appointed commander of the steamship Samson, which was at the disposal of the Russian military authorities. He was tasked to climb the river and clean it of the hunghuz. During the entire navigation, the Samson under the Russian flag cruised along the river, ensuring the safe navigation of small caravans carrying millions of pounds of cargo. 
In 1902 Kozlyaninov returned to St. Petersburg and was appointed Assistant Chief of the Arctic Ocean Hydrographic Expedition A.I. Varnek. On the ship "Pakhtusov" he was engaged in the study of the White and Barents Seas. 
Then Kozlyaninov served in the Baltic, having survived the troubled times of 1905-1906. 
Severe illness interrupted his brilliant navy career. He resigned and took up journalism, the capacity for which was revealed to him in his youth. His articles and reviews devoted to theatrical productions, primarily ballet, were published on the pages of the St. Petersburg newspapers "New Time" and "Russia". 
The last years of Kozlyaninov’s life were agonizing. He suffered from circulatory disorders and nerves, could not walk well. 
He died of cerebral hemorrhage. He was buried in Petersburg at the family site of the Mitrofanyevsky cemetery destroyed in the 1930s. 
An island in the Barents Sea at the northwestern tip of Vaigach Island. At the suggestion of Varnek, he was named in 1902 by the decision of the Council of the Imperial Russian Geographical Society (protocol of December 5, 1902).