Based upon the facts you have provided you would have a right to seek a partition of the land. Texas courts prefer to partition "in kind" which means dividing the property into tracts proportionate to ownership and awarding the tracts on that basis. For example, if the 400 acres is of equal value a court would divide 200 acres to your aunt, 100 acres to you and 100 acres to your brother. Of course, that assumes each acre is of the same value. If property cannot be divided "in kind" the court will order the property sold and the proceeds divided.
Since I have not seen any of the documents in this matter it is possible that there is something that would interfere with the partition. A qualified real estate attorney should review the pertinent documents and he could then assist you.
I hope this helps.
Russel L. Robinson
Answered on Feb 15th, 2013 at 10:44 AM