Born on 29 September 1758 in Burnham Thorpe, Norfolk, Horatio Nelson was the sixth of the 11 children of a clergyman. He joined the navy aged 12, on a ship commanded by a maternal uncle. He became a captain at 20, and saw service in the West Indies, Baltic and Canada. He married Frances Nisbet in 1787 in Nevis, and returned to England with his bride to spend the next five years on half-pay, frustrated at the lack of a command.
When Britain entered the French Revolutionary Wars in 1793, Nelson was given command of the Agamemnon. He served in the Mediterranean, helped capture Corsica and saw battle at Calvi (where he lost the sight in his right eye). He would later lose his right arm at the Battle of Santa Cruz de Tenerife in 1797.