In 1534 Duke Ulrich called him to Wurttemberg in aid of the reformation there, as well as for the reconstitution of the university of Tubingen, which he carried out in concert with Ambrosius Blarer of Constanz.
He commenced his great work on the textual criticism of the Scriptures; and at the instigation of his friend Ambrosius, who provided him with the necessary amanuenses, he published his commentaries on the Old Testament and his dogmatic investigations.
The first was written during the persecution of Maximinus Thrax, and was dedicated to his friends Ambrosius and Protoctetus.
Among other matters reference is made to the introduction of Christianity in the reign of Tiberius; the persecution under Diocletian; the spread of the Arian heresy; the election of Maximus as emperor by the legions in Britain, and his subsequent death at Aquileia; the incursions of the Picts and Scots into the southern part of the island; the temporary assistance rendered to the harassed Britons by the Romans; the final abandonment of the island by the latter; the coming of the Saxons and their reception by Guortigern (Vortigern); and, finally, the conflicts between the Britons, led by a noble Roman, Ambrosius Aurelianus, and the new invaders.
The Myvyrian Archaeology (408-484) gives the three principal bangor (college) institutions as follows: - the bangor of Illtud Farchawg at Caer Worgorn (Wroxeter); that of Emrys (Ambrosius) at Caer Caradawg; bangor wydrin (glass) in the glass isle, Afallach; bangor Illtud, or Llanilltud, or Llantwit major (by corruption), being a fourth.
259, 266; Georg Lommel, Der ostfrcinkische Reformator Ambrosius (Giessen, 1847); Bollandist Bibl.
Merlin (Myrddin), the famous wizard, bard and warrior, perhaps an historical figure, first introduced by Geoffrey of Monmouth, originally called Ambrose from the British leader Ambrosius Aurelianus, under whom he is said to have first served.
Ambrosius Macrobius Theodosius (c. 400) wrote a treatise on Cicero's Somnium Scipionis and seven books of miscellanies (Saturnalia); and Martianus Capella (c. 430), a native of Africa, published a compendium of the seven liberal arts, written in a mixture of prose and verse, with some literary pretensions.
Ambrosius Stub (1705-1758) was a lyrist of great sweetness, born before his due time, whose poems, not published till 1771, belong to a later age than their author.
A similar account of its origin is given in the triads of the Welsh bards, where its erection is attributed to Aurelius Ambrosius, the successor of Vortigern.
On the other hand, the Welsh bard Aneurin states that Stonehenge existed before the time of Aurelius, whose title of Ambrosius may, as suggested by Davies, have been derived from Stonehenge.
AMBROSIUS AURELIANUS, leader of the Britons against the Saxons in the 5th century, was, according to the legends preserved in Gildas and the Historia Brittonum, of Roman extraction.
There are signs of the existence of two parties in the national opposition to the invaders, but as Pascent, son of Vortigern, is said by Nennius to have held his dominions in the west by leave of Ambrosius, the Roman element seems to have triumphed.
Some measure of success appears to have attended the efforts of Ambrosius, and it has been suggested that Amesbury in Wiltshire is connected with Emrys, the Celtic form of his name.