I'm Doug, and I'm very sorry to hear of your situation. My goal is to provide you with excellent service today.
Absent some ability to get a replacement deed based on the fact that you can find neither the original Grantor ore that Grantor's successors, in order to perfect a clean title such that you can safely provide a Warranty deed in a sale to a third party, the only legal avenue is to seek confirmation of your sole right, title and interest in the property by filing a Quiet Title lawsuit in the county where the property is located and getting the court to order that the property is yours, with no encumbrances on the property.
While the lawsuit is pretty straightforward, you would be well served by having a local real estate attorney assist you because the process of naming potential defendants and serving legal notice of the commencement of the action in court is much more complicated than simply suing a person whose identity and location you might know.
In response to your Quiet Title action, the court will issue an order that the property legally belongs to you, without liens or other encumbrances, and you can file that order with the county recorder's office and then provide a buyer with a Warranty Deed you can be assured will not come back to bite you.
You may reply back to me using the Reply link and I will be happy to continue to assist you until I am able to address your concerns, to your satisfaction.
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I wish you and yours the best in 2015,