I do not see the point of creating a profile called ''Unbekannt Unbekannt'' (Unknown Unknown), with no data for him, other than that he was married to a person with a real name. For his wife alone - with the real name and data - would suffice as a link binding any children as siblings to each other. But in the case of the example given, there are no children attached to the UNKNOWN profile. Unbekannt (Unknown) and his wife Engel Luisa Friedericka Schmidt had no children together. So, what is the point of creating a profile with no name and no data, other than to demonstrate that the woman was married to someone unknown ? But that can be more simply stated in the biography section ''She was married to a man, whose name is unknown.''