In 1821 , three days after his eighteenth birthday , John Horwood was the first person to be hanged at the Gaol for murdering Eliza Balsum by hurling a pebble at her which hit her on the right temple .
Eliza Balsum then tumbled into a brook .
In 1821 , three days after his eighteenth birthday , John Horwood was the first person to be hanged at the Gaol for murdering Eliza Balsum by hurling a pebble at her which hit her on the right temple and she then tumbled into a brook .