Białowierśnie , is a village in the administrative district of Gmina Giby, within Sejny County, Podlaskie Voivodeship, in north-eastern Poland, close to the borders with Belarus and Lithuania.
History In the 18th century the village, which had 6 fibres, belonged to the Camaldolese estate in Wigry. In 17th and 18th century it was inhabited by several to a dozen farmers.
In 1827 it was recorded that the population of the village numbered at 111 and 11 homes.
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