THE HISTORY OF PROTESTANTISM is a monumental work by J.A, Wylie, published in 1870.  I have reproduced here in PDF format Chapters 16-19 (Pages 600-624) of Volume II which describe in great detail the events of the Saint Bartholomew's Day Massacre and its aftermath in the years following up to the Edict of Nantes.

I would ask that the reader to carefully consider this material with a view to what is presented to us in Revelation Chapter 11 and the prophecies given there concerning the slaying of Christ's Two Witnesses and their 1260 days of prophesying in sackcloth, their death, their resurrection and their subsequent ascension into the heavens.

Wylie describes in great detail the horror of the massacre, the thousands of lives lost, the death of the Protestant body politic in France, how news of the massacre was received all over Europe to the horror of some but the unbridled rejoicing of others, and the subsequent resurrection of the Huguenot movement under Henry of Navarre (the future King Henry IV of France).

Whether or not Wylie was conscious of the correspondence between the scene described in Revelation Chapter 11 and the Massacre and surrounding events as he has here described them, I do not know.  However, I know of no better historical commentary on this portion of scripture