hidden Gatchina, town GATCHINA (Trotsk in 1923-27, Krasnogvardeisk in 1927-44), a town in Leningrad Oblast, adm. center of Gatchina District. Population: 82,900 (the largest town in the Leningrad Oblast.) First mentioned in the Novgorod scribe roll of 1499 -1500 as... more