Arthur Guinness, Son and Co., brewers, of Dublin, Ireland.

Guinness is a popular dry stout that originated in the Arthur Guinness' brewery at St. James's Gate in Dublin, Ireland. The beer is based on the porter style that originated in London in the early 18th century. It is one of the most successful beer brands in the world, being exported worldwide.

1755 Arthur Guinness started brewing ales initially in Leixlip, County Kildare.

1759 Arthur Guinness bought a 9,000 year lease on a brewery at St. James's Gate, Dublin, Ireland.

1769 On 19 May Guinness exported their product for the first time, when six and a half barrels were shipped to England.

Before the close of the 19th century, the Guinness brewery was the largest in the world. By this time, the Guinness product had been introduced into markets as far afield as America, Australia, the Far East and Africa.

1886 The company, Arthur Guinness, Son and Co, was floated on the London Stock Exchange as a limited company 

1899 The breweries pioneered several quality control efforts. The brewery hired the statistician William Sealy Gosset, who achieved lasting fame under the pseudonym "Student" for techniques developed for Guinness, particularly Student's t-distribution and the even more commonly known Student's t-test.

1929 "Employment level of 3,210 at St. James’ Gate in 1929, at a time when the next largest breweries in the country employed only around 200."

1932 Parent company was headquartered in London.