BONARELLI, DELLA ROVERE, COUNT GUID' UBALDO, an Italian poet, born at Urbino on the 25th December 1563, was the son of Count Pietro Bonarelli, minister of the duke of Urbino. He was intrusted with several important negotiations, and was esteemed an able politician and learned philosopher. He was the author of a favola pastorale, entitled Filli di Sciro, printed for the first time at Ferrara in 1607, with cuts, 4to; and of an amatory production entitled Discorsi in difesa del doppio Amor della sua Celia, first printed at Ancona in 1612, 4to. He died at Fano in 1608, aged forty-five.