Nelson urged mistress to give their baby girl 'new' smallpox vaccine

Naval hero praises Jenner's cowpox jab in a newly found love letter to Emma Hamilton, written as he prepared for war He is best remembered as the one-armed hero who defeated Napoleon, rewrote the rules of naval warfare and died at sea, in battle, onboard HMS Victory. Now, the "chance discovery" of a 220-year-old love letter from Admiral Horatio Nelson to Lady Emma Hamilton, his mistress, reveals how open-minded and ahead of his time the formidable captain was about a radical new scientific break...