David Barry Moriarty (1837-1879) was a British captain of Irish origin who was most notable for commanding the 80th Regiment of Foot during the Battle of Intombe, in which he was killed during the fighting.

While at Jamaica, he was offered an exchange to the 1st Battalion, to which he accepted and headed for Ireland then later, went Queenstown to Bombay.

[2] When the Anglo-Zulu War broke out, after news on the Battle of Isandlwana, fearing of a Zulu attack, Charles Tucker sent Moriarty and 106 infantry to bring in a convoy to supply the village of Lüneburg.

[4] Meanwhile, while the convoy was still trying to ferry the river, Mbilini waMswati gathered up a Zulu army of around 800 men and attacked the British positions early on the morning of 12 March.

Moriarty himself grew complacent and charged outside with a revolver and killed 3 Zulu before getting stabbed with his final words being: "Fire away boys, death or glory!