Janiak & Mercer on forgotten early modern female philosophers...

...in The Washington Post of all places!  It's quite a nice overview, and especially remarkable that it appeared in a mainstream outlet.  (They do suggest, less plausibly, that the neglect of some of the early modern figures they mention has something to do with the underrepresentation of women in academic philosophy.)  Herewith a question for other scholars and students of the history of philosophy:  what do we know about why these figures were neglected?  In every period I know something about there were figures of enormous importance in their day who are now largely unknown (e.g., Ludwig Buchner's Kraft und Stoff, a polemic and brief on behalf of materialism, was the best-selling book in Europe in the 19th-century after the Bible, though is almost wholly unknown today--Beiser devotes a chapter to Buchner and the materialist controversy in a recent book, the first extended treatment I had ever seen in English).  Sometimes the explanation is changing philosophical fashions, something the explanation is that the work really wasn't very good (that's Buchner, in my view), and sometimes other kinds of bias and prejudice.