1200AD and 1500AD namesakes occur, primarily residing along the river
IJssel between the cities of Zutphen and Kampen, as well as in the city of
1500AD the family-name occurs in the villages of Giethoorn and
Wanneperveen both located in the north-western part of the province of Overijssel.
records in the archives, gaps, prevent the making of a documented
connection between the several different lineages going by the surname Oort.