Attila the Hun was the ruler of the Huns and leader of the Hunnic Empire from 434 to his death in 453. Though the details of his death are a little sketchy and several different accounts and theories have been presented, they all center around the cause of death being a nose bleed in early 453.
What is most often claimed is that Attila the Hun died of a nosebleed on his wedding night. He had just married a woman named Ildico. A going theory is that he died of a hemorrhoid in his esophagus which was caused by heavy drinking.
Chronic alcoholism can lead to acid reflux disease, which can lead to ruptures in the esophagus. This would mean it wasn’t his nose really bleeding at all, but blood would still have been flowing out his nostrils and mouth. A
nother account claims that his nose suddenly began bleeding very severely during the wedding feast and in the ensuing confusion, he choked to death. One more theory is that he died of internal bleeding. There is also an account that claims his wife killed him, but most scholars reject it as hearsay.