Home Popham was born at Gibraltar in 1762 while his father, Joseph, was Britain’s consul in Tetuan, Morocco. His father was apparently a devotee of both marriage and fatherhood. Home allegedly had twenty siblings and some twenty-three half-siblings.
He wasn’t immediately destined for the navy. In 1776, he enrolled in Trinity College, Cambridge. He went on a couple of short voyages while at Cambridge, and in 1778 he made a firm decision joining the navy aboard HMS Hyena, commanded by family friend Captain Edward Thompson, and was present at the Battle of Cape St. Vincent where Hyena was a repeating frigate.
Hyena paid off in 1782 as the American Revolution was winding down. Captain Thompson was promoted to commodore and given command of a small squadron off the coast of West Africa. He brought young Home along with him as a marine surveyor. Shortly thereafter Popham was promoted to lieutenant.