Count Pietro Gamba (1801–27) was the brother of Teresa Guiccioli, Lord Byron's mistress, and a member of the Italian revolutionaries known as the Carbonari. He accompanied Byron on his mission to Greece in 1823, and was described by the poet as 'one of the most amiable, brave, and excellent young men' he had ever encountered, 'with a thirst for knowledge, and a disinterestedness rarely to be met with'. This account of the mission, and of Byron's death and the subsequent controversies over its cause and the disposal of the body, was published in 1825, and dedicated to Byron's close friend, John Cam Hobhouse. It was based on Gamba's diary, 'containing a minute account of all the events of the day … My only object is to give a simple narrative of what Lord Byron did in Greece'. Gamba died of typhoid in 1827, still working for Greek independence.