Answer:
The deed transferring the title to Davis is Invalid.
Step-by-step explanation:
In the will written by Calhoun, Mary is entitled to the property for the duration of her life, after which the property is expected to be passed along, thus any deed from Mary to the new buyer in a fee simple estate manner will be invalid. She does not have the right to outrightly sell the land because she is just 30 and can still bear children. The property is expected to belong to them and they are the only ones who can sell the property outrightly in this case.