By a process of folk etymology, the Romans could have confused the phones of her foreign name with those of the root men- in Latin words such as mens meaning "mind", perhaps because one of her aspects as goddess pertained to the intellectual....
... I am so sorry to do this to you, but this post has been moved to my new website, The Pagan Calendar, and can be found in its entirety here: The Festival of Mens
As you explore this site, you may find links to a "page not found" instead of something cool and magickal. For this I apologize. I am very working hard behind the scenes to restore those pages along with a link to their homes on my new website where they can be viewed in full.