Something completely else:
Another problem is the maiden name:
If A. B. marries C. D. and the author uses both names (B. and D.) it could be written as:
A. D.-B. (seen as one name on calibre)
A. D. B.
(Other options could be the author still uses B. or only uses D. but that is not 'check-able' (B against D))
When author swaps B and D, it would be recognized as well.
So I think - should be handled as " " in this plugin