Šventupė (Vidiškiai) Manor is a historical estate in Ukmergė District, located approximately 2.5 km northeast of Vidiškiai village. The manor has a long and rich history dating back to the 15th century when it was first mentioned in written sources.
Vidiškiai Manor and the town were first documented in 1492 when they were owned by the noble Vidiškiai family. It is believed that the manor was initially located near the town but was later moved northward and renamed Šventupė. During the Soviet era, the area was also known as Žemaitkiemis.
A surviving inventory from 1596, compiled after the death of Stanislovas Stanislovavičius Vidiškis and his wife Hana Neviedomska, provides valuable historical insights. By the late 17th century, the manor passed into the hands of the Dambrauskas family (bearing the Junoša coat of arms). In the mid-18th century, it was owned by Ukmergė Castle Court Judge Ignas-Tadas Dambrauskas, who sold it in 1761 to Jan Dambrauskas, the standard-bearer of Ukmergė.
A detailed estate plan from 1794 indicates that the central building's location aligns with the ruins of the surviving palace. The manor complex also included the Mūšia estate and several villages—Blusiškiai, Genetėnai, and Kopūstėliai.
In the early 19th century, the manor was owned by Anupras Koska, the marshal of Ukmergė, and his wife Hortenzija. During their tenure, the significant Warsaw–Saint Petersburg highway was constructed nearby. Until 1882, the manor was managed by Captain Ida-Henrietta Grabowska and later by Mykolas Komaras, whose family estate was Raguvėlė Manor. By the early 20th century, the estate covered nearly 500 desyatinas of land.
Following land reforms, the manor remained intact until 1940, when it was owned by Mykolas Komaras’ son, Antanas. The last owner of the estate was Julija Komarienė. After World War II, the Žemaitkiemis Machine and Tractor Station (MTS) was established on the manor grounds, and the estate became known as Žemaitkiemis.