Authors of Moorish-genre Spanish literature were probably not Moriscos themselves.

Evidence

However, we know that other texts of this type were produced by non-Moriscos. Cervantes, P´erez de Hita, Alem´an, Espinel, none of them have been shown conclusively to be Moriscos (though, to be sure, doubts have been expressed about the pedigrees of some of them). — L. P. Harvey, Muslims in Spain, 1500 to 1614, 960