By the time of Arthur’s death in 1855, the economy had mostly recovered, and Guinness was now known worldwide due to the global expansion he had spearheaded. The next man to take the reins at Guinness was Arthur's eldest son, Benjamin Lee Guinness (pictured).

Under his watch, the company invested in more reliable shipping methods like railways and adopted its now-iconic harp trademark (registered 1876). His bustling public life also propped up his reputation as a business tycoon. He became the first Lord Mayor of Dublin in 1851 and later the first Guinness to be elected to the House of Commons.

By the time of his death in 1868, Benjamin was Ireland's wealthiest man with a personal fortune estimated at £1 million, the equivalent of around $200 million (£150m) in today's money.

The real story of the Guinness family fortune