Decedent died without a Will, with a property

A quit claim does not pass title.  It merely acknowledges that the signer will quit claiming a right to use property, such as an easement.  You do not say whether your brother or his wife died first but it appears that she died first.  If so, since he did not adopt the stepsons, his property would usually go to his siblings. Do not sign the quit claim deed.  Consult with a probate lawyer who practices in the county in which your brother died.

Please accept my condolences on the loss of your brother. There is no actual question in your post. However, if your brother's wife did not own any interest in the property at her death, if he was the sole owner of the property when he died, if he had no children of his own and had not remarried before his death, if neither of your parents survived your brother, and if you were his only sibling, then the property may have passed to you at his death under Georgia intestacy law (ideally, someone will still administer his estate and clear up the title). Stepsons who were not your brother's legal or biological children would not have any claim against his estate unless his wife owned an interest in the property at the time she died. If she did, however, then the stepchildren may own interests in the property.   You will need to hire an attorney to review the situation and help you figure out what rights you might have with regard to the property. If you do own an interest in it, you can then find out from the attorney what your options are. This isn't the kind of situation that anyone would be able to address on a general information board like this one.  Best wishes to you.