I have read Steven Bohr's material yes. I am very comfortable with the 539-1798 time period...I am interested in your (correct) observation that it was but a presumption to
Insist that all 3 horns must be deposed by 538. Many years ago I had a very interesting discussion with a Pentecostal pastor in these issues, and he mentioned other tribal kingdoms that could have equally been included in the (10) which I had never considered. Those were they of the eastern Empire... Such as the Gepids and the Bulgars for example... The pastors point bring that eastern time was not conquered until the 15th century... His question being why should the prophetic focus be only on the western Empire?
It is more than interesting to note, that sister White, did not cite any specific listing of the "ten", nor of the "three", in any of her works. I take that as meaning, there was no specific listing, and that "ten" is as scripture says, representative of "whole" (all, however many there be), as seen in Ecclesiastes 12:13-14, and other places in scripture. She also never makes the mistake of equalling the 10 horns of Daneil 7 to the 10 horns of Revelation 17, as many do today. There are connections between Daniel 2 and Revelation 17 though. See for yourself - Ellen G. White Writings
When she mentions "plucked up by the roots" it is always in connection with the scriptural definition, which is to mean "twice dead" - Ellen G. White Writings
G. I. Butler stated,
"... The ten horns, he also says, are "ten kings," or kingdoms, which are evidently the kingdoms of the Western empire, into which Rome was divided between the years 351 and 483 AD. These the commentators inform us were the Huns, Ostrogoths, Visigoths, Franks, Vandals, Suevi, Burgundians, Heruli, Anglo-Saxons, and Lombards. {1904 GIB, CHS 167.1} ..." - The Change Of The Sabbath, by G. I. Butler, page 167.1
Josiah Litch gave,
"... Those ten kingdoms, as given by Machiavel the historian, and the time of their settlement, as given by Bishop Lloyd, I will here introduce. 1. The Huns in Hungary, [80] A. D. 356. 2. The Ostrogoths in Mysia, A. B. 377. 3. The Visigoths in Pannonia, A. D. 378. 4. The Franks in France, A. D. 407. 5. The Vandals in Africa, A. D. 407. 6. The Sueves and Alans in Gascoigne and Spain, A. D. 407. 7. The Burgundians in Burgundy, A. D. 407. 8. The Heruli and Rugii or Turingi in Italy, A. D. 476. 9. The Saxons and Angles in Britain, A. D. 476. 10. The Lombards on the Danube in Germany, A. D. 483. ..." - The Probability of the Second Coming of Christ, about AD 1843, by Josiah Litch, page 79.2
Josiah Litch and William Miller:
"... The ten kingdoms he [William Miller] considered to be "England, France, Spain, Portugal, Germany, Austria, Prussia, Ravenna, Lombardy, and Rome." 3 Josiah Litch felt, however, that the ten horns signified the Huns, Ostrogoths, Visigoths, Franks, Vandals, Suevi and Alans, the Burgundians, the Heruli and "Rugii or Thuringi," the Saxons and Angles, and the Lombards. The little horn was interpreted by Miller, as was done by many other evangelical Protestants, as the papal power which arose among these ten kingdoms. Litch designated the three horns that were plucked up as the Heruli, Ostrogoths, and Vandals. According to Miller they represented Ravenna, Lombardy, and Rome and were called the "states of the Church" by the pope's authority. ..." - Foundations of the Seventh-day Adventist Message and Mission, page 23.1
Uriah Smith gives,
"... Rome was divided into ten kingdoms between the years A.D.356 and 483, as follows: Huns, A.D.356, Ostrogoths, 377, Visigoths, 378, Franks, 407, Vandals, 407, Suevi, 407, Burgundians, 407, Heruli, 476, Anglo-Saxons, 476, Lombards, 483. This enumeration of the ten kingdoms is given by Machiavel in his History of Florence, lib.1. The dates are furnished by Bishop Lloyd, and the whole is approved by Bishop Newton, Faber and Dr. Hales. {1878 UrS, TBI 42.1} ..." - The Biblical Institute, by Uriah Smith, page 42.1
"... As already noticed in chapter 2, Rome was divided into ten kingdoms, enumerated as follows: The Huns, the Ostrogoths, the Visigoths, the Franks, the Vandals, the Suevi, the Burgundians, the Heruli, the Anglo-Saxons, and the Lombards. These divisions have ever since been spoken of as the ten kingdoms of the Roman empire. See on chapter 2:41,42; also Appendix III. {1897 UrS, DAR 132.2} ..." - Daniel and the Revelation, by Uriah Smith, page 132.2
"... The ten kingdoms which rose out of the old Roman empire are enumerated as follows by Machiavel, indorsed by Bishop Newton, Faber, and Dr. [110] Hales: 1. The Huns; 2. The Ostrogoths; 3. The Visigoths; 4. The Franks; 5. The Vandals; 6. The Suevi; 7. The Burgundians; 8. The Heruli; 9. The Anglo-Saxons; and l0. The Lombards. ..." - The Marvel of Nations, by Uriah Smith, page 109.1
"... The fourth great and terrible beast had ten horns. These are declared to be ten kingdoms which should arise out of this empire. Dan.7:24. These correspond to the ten toes of the image. Rome was divided into ten kingdoms between the years A.D. 356 and 483, as follows: Huns, A.D. 356; Ostrogoths, 377; Visigoths, 378; Franks, 407; Vandals, 407; Suevi, 407; Burgundians, 407; Heruli, 476; Anglo-Saxon, 476; Lombards, 483. This enumeration of the ten kingdoms is given by Machiavel in his History of Florence, lib. 1. The dates are furnished by Bishop Lloyd, and the whole is approved by Bishop Newton, Faber, and Dr. Hales. {1884 UrS, SYNPT 13.2} ..." - Synopsis of the Present Truth, by Uriah Smith, page 13.2
"... The ten kingdoms which arose out of the old Roman Empire are enumerated as follows by Machiavel, indorsed by Bp. Newton, Faber, and Dr. Hales: 1. The Huns. 2. The Ostrogoths. 3. The Visigoths. 4. The Franks. 5. The Vandals. 6. The Suevi. 7. The Burgundians. 8. The Heruli. 9. The Anglo-Saxons, and 10. The Lombards. ..." - The United States in the Light of Prophecy, by Uriah Smith, page 36.1
James White stated:
"... The prophet considered the ten horns. These represent: 1. Huns. 2. The Ostrogoths. 3. The Visigoths. 4. The Franks. 5. The Vandals. 6. The Suevi. 7. The Burgundians. 8. The Heruli. 9. The Anglo-Saxons. 10. The Lombards. ..." - The Judgment, by James White, page 6.2
"... According to Marchiaval, the historian, (Hist. of Florence, book 1,) and Bishop Lloyd, an excellent chronologer, (in Lowth's Commentary on the Prophets, pp. 381-2,) and Dr. Hale's Analysis of Chronology, (Vol. 2,b.1, pp. 536-8,) the first ten kingdoms were as follows:- 1. The Huns, in Hungary, A. D. 356. 2. The Ostrogoths, in Mysia, A. D. 377. 3. The Visigoths, in Pannonia, A. D. 378. 4. The Franks, in France, A. D. 407. 5. The Vandals, in Africa, A. D. 407. 6. The Sueves and Alans, in Gascoigne and Spain, A. D. 407. 7. The Burgundians, in Burgundy, A. D. 407. 8. The Heruli and Rugii, or Thuringi, in Italy, A. D. 476. 9. The Saxons and Angles, in Britain, A. D. 476. 10. The Lombards, in Germany, A. D. 483. ..." - The Advent Review and Sabbath Herald, by James White, June 20, 1854, page 161.28
"... The ten horns are usually enumerated as follows: 1. The Huns. 2. The Ostrogoths. 3. The Visigoths. 4. The Franks. 5. The Vandals. 6. The Suevi. 7. The Burgundians. 8. The Heruli and Rugli, or Thuringi. 9. The Anglo-Saxons, and 10. The Lombards. ..." - The Advent Review and Sabbath Herald, April 15, 1862, page 157.12
"... the ten kingdoms that arose out of the Roman empire, namely, the Huns, Ostrogoths, Visigoths, Franks, Vandals, Suevi, Burgundians, Heruli, Anglo-Saxons, and Lombards. ..." - The Advent Review and Sabbath Herald, December 9, 1862, page 157.12
Joshua V. Himes (Signs of the Times):
"... its ten horns are the ten kingdoms of the Gothic nations, which, towards the fifth century, all at once (as if at the word of command, from the banks of the Vistula to the Roman frontiers,) invaded, with a view to retain, under a divided form, the vast empire of the Latins, namely:--the Visigoths, Herules Ostrogoths, Francks, Burgundians, Vandals, Alans, Sucoi, Gepides, and Lombards! {July 3, 1844 JVHe, HST 169.33} ..." - Signs of the Times, July 3, 1844; page 169.33
Stephen Nelson Haskell stated:
"... The ten tribes, namely, the Ostrogoths, the Lombards, the Heruli, the Vandals, the Visigoths, the Suevi, the Saxons, the Huns, the Burgundians, and the Franks, were by that time, or a few years later, settled within the borders of the Western Empire True, the Vandals, Heruli, and Ostrogoths were of short duration, having been, before the year 538, “plucked up” ..." - The Story of the Seer of Patmos, by S. N. Haskell, page 192.1
and so on.