Some may suggest a link between the Watchers and the fallen angels in the Flood account along with the angels in Jude 1:6. Wikipedia has an interesting article that brings up this connection which would suggest that the Watchers and the Archangels are not the same. Later in the article it says that the Aramaic iri ("watcher" singular) is also used to refer to Archangels such as Raphael. I think that it would be hard to argue that the Watchers and the Archangels are one in the same.
I doubt that Witnesses will consider any references to extra-biblical literature as valid and will refuse to acknowledge that any thing other than the Watchtowers point of view should be considered.
pseudo
http://en.wikipedia.org/wiki/Watcher_(angel)
Watcher (angel)
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Fallen angels
Main article: Fallen angel
In the Book of Enoch, the Watchers (Aramaic. ???????, iyrin), are angels dispatched to Earth to watch over the humans. They soon begin to lust for human women, and at the prodding of their leader Samyaza, they defect en masse to illicitly instruct and procreate among humanity. The offspring of these unions are the Nephilim, savage giants who pillage the earth and endanger humanity. Samyaza and associates further taught their human charges arts and technologies such as weaponry, cosmetics, mirrors, sorcery, and other techniques that would otherwise be discovered gradually over time by humans, not foisted upon them all at once. Eventually God allows a Great Flood to rid the earth of the Nephilim, but first sends Uriel to warn Noah so as not to eradicate the human race. While Genesis says that the Nephilim remained "on the earth" even after the Great Flood, Jude says that the Watchers themselves are bound "in the valleys of the Earth" until Judgment Day. (See Genesis 6:4 and Jude 1:6, respectively)
The chiefs of tens, listed in the Book of Enoch, are as follows:
“ | 7. And these are the names of their leaders: Sêmîazâz, their leader, Arâkîba, Râmêêl, Kôkabîêl, Tâmîêl, Râmîêl, Dânêl, Êzêqêêl, Barâqîjâl, Asâêl, Armârôs,Batârêl, Anânêl, Zaqîêl, Samsâpêêl, Satarêl, Tûrêl, Jômjâêl, Sariêl. 8. These are their chiefs of tens." - R. H. Charles translation, The Book of the Watchers, Chapter VI. | ” |
The book of Enoch also lists leaders of the 200 fallen angels who married and commenced in unnatural union with human women, and who taught forbidden knowledge. Some are also listed in Book of Raziel (Sefer Raziel HaMalakh), the Zohar, and Jubilees.
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Books of Enoch
In the Books of Enoch, the first Book of Enoch devotes much of its attention on the fall of the Watchers. The Second Book of Enoch addresses the Watchers (Gk. Grigori) who are in fifth heaven where the fall took place. The Third Book of Enoch gives attention to the unfallen Watchers. [22]
The use of the term "Watchers" is common in the Book of Enoch. The Book of the Watchers (1 Enoch 6-36) occurs in the Aramaic fragments with the phrase irin we-qadishin, "Watchers and Holy Ones", a reference to Aramaic Daniel. [23] The Aramaic irin "watchers" is rendered as "angel" (Greek angelos, Coptic malah) in the Greek and Ethiopian translations, although the usual Aramaic term for angel malakha does not occur in Aramaic Enoch. [24] The dating of this section of 1 Enoch is around 2nd-1st Century BCE. This book is based on one interpretation of the Sons of God passage in Genesis 6, according to which angels married with human females, giving rise to a race of hybrids known as the Nephilim. The term irin is primarily applied to disobedient Watchers who numbered a total of 200, and of whom their leaders are named, but equally Aramaic iri("watcher" singular) is also applied to the obedient archangels who chain them, such as Raphael (1 Enoch 22:6).