While updating a number of work pages for compositions transferred from WIMA I've encountered a limitation in IMSLP's registering of Persons: among the WIMA contributors is a musicologist whose name is 'Jens Peter Jacobsen', i.e. exactly the same as a famous Danish poet living in the second half of the 19th century. That poet was already registered in WIMA as author of song lyrics.
When I attempted to register 'my' 'Jens Peter Jacobsen' the person entry was rejected saying that a person with that name was already in the IMSLP list of persons. Per coincidence I know the musicologist quite well. He was my teacher once and was always called 'Jesper'. Only by adding that nickname within parentheses I was able to create a Person record for him. This is an OK work-around for that specific person. But IMHO the case brings a principal problem to light: there are people, incl. composers etc., in this world with identical names. Hence it must be possible to register multiple persons with identical names. That might require kind of ID to uniquely identify and distinct such persons within IMSLP
