Alexander Theodor von Middendorff was a Russian zoologist and explorer of Baltic German origin.
Early life
Middendorff's mother Sophia Johanson, the daughter of an Estonian farmer, had been sent to Saint Petersburg for education by her parents. There she met with the future director of the St. Petersburg Pedagogical Institute, Theodor Johann von Middendorff, whose father was a Baltic German pastor in Karuse, Estonia. As the two young people came from different social ranks and were unable to marry each other, their daughter Anette and son Alexander were born out of wedlock. Alexander was born on 18 August 1815 in St. Petersburg, but could not be baptized until six months later in the Estonian Lutheran Congregation of St. Petersburg, as the German Lutheran Congregation of St. Petersburg had not agreed to perform the baptism. In the accompanying paperwork, Middendorff's parents registered themselves as a married couple. In order to escape the attention of the public, the mother and son returned to Estonia, where they settled at the Pööravere Mansion. Only in 1824, when the young Middendorff was ready to go to school, was his status legitimized when his parents finally married. ; "-ovich" meaning "the son of" the person
In 1839, Middendorff became Assistant Professor of Zoology at Kiev University. In the summer of 1840, Baer asked Middendorff to join his second expedition to Novaya Zemlya. Due to stormy conditions the expedition failed to reach Novaya Zemlya, but Baer and Middendorff explored Russian and Norwegian Lapland, as well as the Barents and White Seas. Middendorff was tasked with crossing on foot the Kola Peninsula and mapping the peninsula from Kola to Kandalaksha while collecting zoological and botanical material. From 1843 to 1845, on behalf of the St Petersburg Academy of Sciences, he travelled to the Taymyr Peninsula and then along the coast of the Sea of Okhotsk and entered the lower Amur River valley. He published his findings in Reise in den äußersten Norden und Osten Sibiriens in German, which included an account of the effects of permafrost on the spread of animals and plants. He also wrote Die Isepiptesen Russlands, an account of bird migration in Russia, and a monograph on molluscs, Beiträge zu einer Malacozoologia Rossica, in which he coined the term radula. In 1870 he visited the Baraba steppe and in 1878 the Fergana Valley. He died at Hellenurme in Livonia, present-day Valga County, Estonia. Middendorff's grasshopper warbler, Cape Middendorff of Novaya Zemlya, Kodiak bear, and Middendorff Bay of the Taymyr Peninsula are named after him.