Campinia is the Latin name for Campine (Kempen in Dutch), is a Principality located in The Sulzberger Bay. Campinia means "region of fields" (campus means "field"). The principality was created in 2000. It was inactive for a few years. From 2010 it is active again,
In 2012 the Grand Prince Guillaume II, changed the Grand Principality into a Principality. So Guillaume II is de facto: Guillaume I, Prince of Campinia. Elias I of Campinia who reformed the principality into a duchy.
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The Duchy of Campinia is located in Antarctica. and has two Islands: Moody Island and Vollmer Island.
Moody Island is an ice-covered island 19 kilometres (10 nmi) long, between Kizer Island and Steventon Island in the Sulzberger Ice Shelf, Marie Byrd Land, Antarctica. It was mapped from surveys by the United States Geological Survey and from U.S. Navy air photos (1959–65), and was named by the Advisory Committee on Antarctic Names for E.L. Moody, a dog-driver with the Byrd Antarctic Expedition (1933–35)
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Vollmer Island is an ice-covered island 20 kilometres (11 nmi) long, lying along the edge of Sulzberger Ice Shelf, 13 kilometres (7 nmi) northwest of Cronenwett Island. It appears that this feature was first observed and roughly mapped from aerial photographs taken by the Byrd Antarctic Expedition, 1928-30. Named by Advisory Committee on Antarctic Names (US-ACAN) for Lieutenant T.H. Vollmer, U.S. Navy, engineering officer aboard USS Glacier along this coast, 1961-62.