Hi Nono314
As you are an active user of Mix'n'Match, I was wondering what you think of the approach outlined at Help:Add_main_subject_with_Mix-n-Match, including Wikidata:Property_proposal/MxM_xref.
The idea is to be able to match up items for entries of biographical dictionaries (and other publications with items), e.g. the ones at Help:Import_NBD_from_enwikisource/lists/all_entries. I actually tried it in the test catalogue and it went fairly well.
To move ahead with others, Wikidata:Property_proposal/MxM_xref would be most helpful. --- Jura 11:23, 13 April 2020 (UTC)