A couple of years ago, in Special:Diff/123045640 and Special:Diff/123045648, your bot added references for the birth/death dates. The item has two dates for both properties so I was trying to verify them, but I can't see anything more specific than the year on http://d-nb.info/gnd/122216954. Do you remember where you fetched the data from?
Topic on User talk:Pasleim
Integrated Authority File references
In the html representation, DNB always only shows year precision. To get higher precision, you need to look at the rdf representation of the entry.
Ugh, why would anyone do that... Anyway, thanks! I'm sure that will be useful to know for other things too. :)