Kołaczkowo is a village in the administrative district of Gmina Witkowo, within Gniezno County, Greater Poland Voivodeship, in west-central Poland.
During the German occupation (World War II), in December 1939, the Germans expelled many Polish families from Kołaczkowo to the so-called General Government, and their houses were handed over to German colonists as part of the Heim ins Reich policy.Maria Wardzyńska (2017) Wysiedlenia ludności polskiej z okupowanych ziem polskich włączonych do III Rzeszy w latach 1939-1945, IPN, Warsaw, p. 171 (in Polish)
There is a historic manor house in Kołaczkowo with an adjacent park and an old distillery.
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