The type of deed in which the grantor defends the title back to its beginning is a

The type of deed in which the grantor defends the title back to its beginning is a GENERAL WARRANTY DEED. 
Deed is used to transfer title rights. A general warranty deed is used to convey all the grantor deed to the grantee and it also guarantees that if the title is defective, the grantor may be hold liable.
The grantor is the seller while the grantee is the buyer.