You are moving into an area of administration where you can seriously misstep. You need a probate attorney to guide you moving forward.
As for evicting your mother's husband, it is possible. You mention you inherited everything in your mother's will. Was the will created prior to her marriage? If so, it is likely he will inherit 1/2 of her estate as he might be an omitted heir.
Next, as surviving spouse, he has a right to file a petition for year's support. He has 2 years from your mother's death to file the petition
If you are certain he does not inherit and will not be filing a petition for year's support, you must notify him that he must vacate the house and you can then begin the eviction process by filing a dispossessory action against him.
Answered on Jun 19th, 2019 at 5:23 AM