Robert sent me this: "The earliest use of "Islamism" that I can find
(also referring to Islam, the religion) is by Albertus Bobovius in "A
Treatise Concerning the Turkish Liturgy, the Pilgrimage to Mecca, Circumcision,
Visiting the Sick, etc." published in 1712:
Bobobovius is described as "Sometime first
interpreter to Mahomet IV.
Emperor of the Turks". Apologies to Bobovius.
