prorex means viceroy. Lexicurio rates it Sui generis — a strength score of 96 out of 100.
noun
- viceroy“Nay, pray you let him ſtay a greater
Fits Menaphon, than warring with a Thiefe:
Create him Prorex of Affrica,
That he may win the Babilonians hearts,
Which will reuolt from Perſean gouernment,
Unleſſe they haue a wiſer King than you.”