Lassinius Peter 
(appr. 1700–19.12.1735)

Swede by nationality, was born in Denmark. Major Lieutenant, in the Russian service since 1725. 
Lassinius sailed a lot and was an experienced navigator. He participated in the First Kamchatka Expedition of V. Bering. He voluntarily volunteered to participate in the All-Russian Central Economic Association and was appointed commander of the East Lena detachment, who was ordered to go on the "Irkutsk" boat from the Lena estuary to the east to the Kolyma estuary and from there to the Anadyr mouth and further to Kamchatka. 
The detachment left Yakutsk on June 29, 1735 simultaneously with the detachment V.V. Pronchishchev. August 2, both units reached Stolb Island and through the Bykovskaya channel entered the sea. Immediately after going out to sea, “Irkutsk” fell into heavy ice, which was catching up with a strong north wind. With difficulty, I managed to pass the western shore of Buor-Khaya Bay to the mouth of the Khara-Ulakh River, where on August 18 the detachment was forced to hibernate. The place for wintering, contrary to the opinion of experienced team members, Lasinius chose unsuccessfully: it was low and damp. Already on September 16, after strong northern winds, the water rose, and winter quarters were flooded for several days. 

Wintering began and was extremely difficult. Lassinius was rude and implacable. Already at the very beginning of wintering, he ordered to halve the already meager diet, citing his decision by saying that the food might not be enough for the Pacific Ocean. A riot was brewing in the detachment. The last straw was the conflict with the non-commissioned officer Dane Rosselius, who, as it turned out, was selling ship stocks of crackers. The commander was declared “word and deed”, which meant his removal from office. The sailors offered to take command of the navigator Vasily Rtishchev, but he understood that he, as an assistant captain, would face the death penalty for participating in the rebellion. They came to the decision to restore food standards, arrest Rosselius and send him under escort to Yakutsk. However, the situation was no longer saved. “From the crowdedness of the chambers and the small movement, people all suffered a scurvy of the disease, which had intensified so much in the spring that most of the ministers lost their lives, and commander Lieutenant Lassinius, too, suffering from a scurvy for a long time, also died”. Command took V. Rtishchev. He took all possible measures, but the state of the team deteriorated sharply. From January 1736, death went one after another. By May 1, at the time of the arrival of the rescue team M.Ya. Shcherbinin out of 50-odd people survived only nine. After providing assistance, they were sent to Yakutsk. 
He was buried near Nizhneyansk. We have shown a photograph of the tomb of Lassinius borrowed on the Internet, but now, after the publication of the remarkable book A.V.Candidov about Pronchishcheve had big doubts about the truth of this photo. The book reported that the expedition D.I. Shparo 2001 and 2002 set themselves the goal of finding the burial of members of the Lasinius detachment, but could not find it. 
Cape in the Gulf of Tereza Klavenes on the eastern shore of Taimyr. Named in 1919 by R. Amundsen. 
The peninsula on the Taimyr Peninsula in the Teresa Klavenes Bay. Named no later than 1943 by Soviet researchers on a cape located on this peninsula.