The first thing you should do is retain a good probate lawyer. I will assume from your message that your Mom has died and that the boyfriend did not have his name on the deed -- and that your Mom did not leave him in the will any right to retain possession. I cannot imagine what rights the lawyer might be trying to protect --- except the possibility that he will argue that some kind of common law marriage was in place at your Mom's death.
Your lawyer can provide better guesswork as to how likely that might be, and can probably shed light on other possibilities.
I recommend that you NOT go to the yellow pages to find a lawyer unless that is the only means at your disposal. Ask your friends, family, neighbors, pastor -- anyone you can think of -- for recommendations for selecting a good probate lawyer -- not just any lawyer. Many lawyers do not have a probate practice and know little about it.
Answered on May 14th, 2012 at 3:20 PM