There has been much misunderstanding about Nestorius.
As you mentioned, the documents discovered in 1895, Bazaar Heracleides proves it as he mentions Jesus Christ is one person, with 2 natures.
But you condemn him as saying 2 persons in Jesus Christ, which is untrue.
The points are like this:
1) Nestorius claimed Jesus is one person with 2 natures, human and divine, and Mary is the mother for the human nature, not for the divine nature.
2) Cyril was quite political, his uncle suppressed the protesters cruelly, Cyril paid the bribery to the sister of Theodosius, the Emperor
3) The Council of Ephesus was not the international conference represented by the churches all over the world, but Cyril brought ca 50 assistants, Nestorius brought 17, and Bishop of Rome sent a few, Jerusalem church didn't attend there, a few from among Emperor's servants.
4) The council was held in Ephesus where the worshippers of goddess Artemis were screaming for declaring Mary as mother of god !
5) All the documents remaining are mostly forged by Cyril and Roman Catholic. Roman Catholic invented new theory which Nesotrius never asserted, as if he claimed at the conference.
6) Nestorius was from Antioch and was trained there where Paul, Baranabas preached and based their missionary, while Cyril was from Alexandria, where the paganism, idolatry, modification of Bible, solar worshippers are prosperous.
7) Nestorius stance was quite correct and therefore the Council of Chalcedon accepted his view in reality. Nestorius himself condemned the people who claim the 2 persons in Jesus Christ.
8) We must remember that Mother of God theory split the Godheads into 3 pieces which is apparently contradicting Trinity.
By saying Mary as Mother of God, it denies God the Father is God, because Mary is not the mother of God the Father!, nor mother of God the Holy Spirit, which are in one according to the Trinity, Tri-Unity.
How is the relationship between God the Father and Mary?
Is Mary God the Son's Mother and therefore Wife of God the Father ?
How is the relationship between Mary and God the Holy Spirit ? Is she the stepmother of God the Holy Spirit ?
All the theory sounds like Greek myths or pagan polytheiests.
This site may explain some of the points fairly well:
http://www.oxuscom.com/theology.htm
http://moses.creighton.edu/okeefe/THL531/projects02/Christolgy5thC/Introduction_files/Nestorius.htm
This proves that Roman Catholic often accused the true believers of the Heresies which they never claimed at that time, then RC destroyed all the documents about them.
However, some literatures survived and tell the truth as Bazaar Heracleides does now. We must avoid condemning the people for what they didn't claim.
Nobody in the Bible calls Mary as Mother of God ! Try to figure out why!