ibbenbüren is said in documentary evidence for the first time in 1146, when the bishop of osnabrück at that time, philipp of katzenelnbogen, donated a tenth of his possessions in ibbenbüren to the getrudenkloster of osnabrück. although ibbenbüren is already much older and a document of the year 1348 already occupies the establishment of a church in the year 799, the year 1146 is officially considered as the year of the foundation of ibbenbüren.