Especially in rural Westphalia, German surnames were often supplemented with a "known as" or "called" name which identified the name of the farm - particularly if a man named Jones married the heir to the Smith farm and assumed responsibility for farming it, he would appear in records as "Jones called Smith". In English-language databases, this can appear as "Jones Or Smith" - which is a good sign that additional research using reliable German sources may be needed.
I have not been able to figure out how to get WikiTree to provide a list of profiles with include that "_Or_" in the middle of a three-element LNAB. Does anyone know whether it can be done?
I have provided a link to one example...