But what lies behind the famous signature? And how did Arthur Guinness & Sons help create one of the world's most iconic brands? Here, for your historic pleasure, are Ten Facts to help you make the acquaintence of Ireland's most esteemed dynasty.
1. The famous St Jame's Gate brewery was bought by Arthur Guinness in 1759. Its 9000 year lease cost just £45pa.
2. In 1778, Arthur began brewing the strong, dark porter that was to become Guinness. The name derives from its popularity with London's porters.
3. Arthur's wife Olivia had 21 children - ten of whom survived. The couple's third son, Benjamin, inherited the business and established trade outside Ireland.
4. In 1851, Benjamin was elected Dublin's first Lord Mayor. He donated £150,000 for the restoration of St Patrick’s Cathedral, and his bronze statue stands in the cathedral grounds. From 1865 until his death three years later, Benjamin represented Dublin in Parliament as a Conservative MP.