Polyphemus Throwing Boulders at the Fleeing Aeis and Galatea (recto); Polyphemus Playing His Reed Pipes for Galatea (verso)
Pobably Felice Giani (Italian, 1758-1823)
or possibly Fortunato Durati (Italian, 1787-1863)
or possibly Juan Bautista Martinez del Mazo (Spanish, 1612-1667)