Based on the facts in your inquiry, unless you have a family or legal relationship with him, you have no right to the bank account. A summary administration or small estates affidavit will not transfer the assets to you unless there is some relationship not detailed. If the funds belonged to him, and he removed you, the funds will be distributed according to any will of his, or through probate on an intestacy basis.
Answered on May 30th, 2013 at 9:50 AM