Several questions for you before we can hope to address your question:
1. You said that "we" are in the process of selling your parents' home. Who are "we"? You and who else?
2. When did each of your parents die?
3. You said, "They both left a will." Did you mean that each of them left a will? Or did they have only a single will that covered both of them? This, coupled with my second question above, and assuming they didn't die simultaneously is going to trigger questions about the contents of the will(s) regarding what happens with the first to die dies.
4. You referred to "the executor of the estate." Is the person in question actually the executor (i.e., was he or she appointed by the probate court to serve in that capacity) or is he/she merely nominated in the will(s) to serve as executor? For that matter, are you talking about your mother's estate or your father's estate?
5. What do you mean by "secession"? To "secede" means to withdraw formally from an alliance, federation, or association, as from a political union, a religious organization, etc. The southern states' purported secession from the United States triggered the U.S. Civil War. The term doesn't make any sense in this context.
6. It is impossible to believe that they owned no property other than their home. Did you mean that they owned no other real property (i.e., real estate)?
7. In whose name or names does title to the property stand? If the answer to this question is different than your answer to my first question above, how exactly do "we" intend to convey title to the buyer of the property if "we" do not own the property? Are "we" being advised/represented by a realtor in connection with this transaction?