Demand freedom from marriage to this person who did not give me her legal name

I wish to have a divorce granted from this woman, Aurora Reyez Casteneda because she left me when I had a massive stroke and took everything I had with her or sold it.  She did not give me even her legal name when we were married.  I do not know if it was even a legal marriage.  Please grant this divorce so I can move on with my life.