Ercole was Lord of Monaco from 17 May 1589 until his death on 29 November 1604 aged 42.
Ercole was the youngest of four sons of Lord Honoré I and Isabella Grimaldi. His eldest brother Charles II became lord of Monaco on the death of their father... Wikipedia
Born: September 24, 1562, Monaco
Died: November 29, 1604 (age 42 years), Monaco
Great grandchildren: Louis I, Prince of Monaco, Teresa Maria Grimaldi, Joan Marie Grimaldi, and more
Parents: Honoré I, Lord of Monaco and Isabella Grimaldi
Children: Honoré II, Prince of Monaco and Joanna Maria of Monaco
Grandchildren: Ercole, Marquis of Baux and Ercole Teodoro Trivulzio
Spouse: Marie Landi (m. 1595)