After the death of Henri III, in 1589, he was proclaimed King by the Leaguers and the Duc de Mayenne under the title of Charles X.Taken captive by Henri IV, of whom he was the paternal uncle, he was imprisoned at Fontenay, where he died in 1594.
[148] De Thou, vol.xi.pp.

154, 155.
[149] Charles, the natural son of Anthony of Navarre and of Mademoiselle de la Beraudiere de la Guiche, one of the maids of honour to Catherine de Medicis.
[150] Such was the plea of the Marechal de Biron during his imprisonment in the Bastille.
[151] Charles Emmanuel, Duke of Savoy, whose intellect had in other respects outrun his age, and whose shrewd good sense should have emancipated him from so gross an abuse of reason, never undertook any measure of importance without consulting the astrologers.

See De Thou, vol.xiii.p.

538.
[152] See the Memoirs of Sully.
[153] It is a certain fact that Henri IV, however he might verbally despise the pretensions of those who exercised what has been happily designated as the "black art," nevertheless admitted more than once a conviction of their mysterious privileges.
[154] De Thou, vol.x.p.

375.
[155] M.de la Riviere had originally been the chief medical attendant of the Due de Bouillon, who ceded him to Henri IV, by whom he was appointed his body-surgeon, in which office he succeeded M.d'Aliboust.
He was born at Falaise, in Normandy, and was the son of Jean Ribel, professor of theology at Geneva.