This article is something in a site that isn't very "established" as Wikipedia is. If you want to find the author, source, and other information your going to have to dig yourself.
Also you can find more by typing "Sengoku era of japan women" in any search engine. I found the article in a couple minutes of searching. You just have to know what key words the searches like.
I post this with the intention of encouraging to research more into it. If you only use my article, well, for shame. Doing homework is how you learn. Searching for info is part of it, so give it a good try!
Gaming World // Articles - Culture of Japan – Women of Feudal Japan