You probably already found this website while doing a 'net search:
http://www.thebabyoutlet.com/html/additional_channels/names/girls_b.html
...where it defines "Berengaria" as meaning "spearbearer maid". How reliable that is, I dunno. I'll check a few other resources tomorrow, but I don't have anything handy that covers obsolete medieval names right now.
Cool topic posting, Daividh. Interesting challenge! :)
-- Nanaea