Lord Iveagh was managing director of the
Guinness partnership and company, from his father's death in 1868 until 1889, running the largest brewery in the world - it spanned . He later became
chairman of the board for life. By the age of 29 he had taken over sole ownership of the Dublin brewery after buying out the half-share of his older brother
Lord Ardilaun for £600,000 in 1876. Over the next 10 years, Guinness brought unprecedented success to
St James's Gate, multiplying the value of his brewery enormously. By 1879 he was brewing 565,000
hogsheads of
stout. Seven years later, in 1886, he was selling 635,000 hogsheads in Ireland, 212,000 in Britain, and 60,000 elsewhere, a total of 907,000 hogsheads. He then became the richest man in Ireland after floating two-thirds of the company in 1886 on the
London Stock Exchange for £6 million before retiring a multi-millionaire at the age of 40. He remained chairman of the new public company
Guinness, and was its largest shareholder, retaining about 35% of the stock. The amount can be compared to the 1886
GDP of the
UK, which was £116 million. By 1914 the brewery's output had doubled again from the 1886 level, to 1,877,000 hogsheads. In 1902 he commissioned the
Guinness Storehouse, that is today one of Ireland's main tourist attractions. ==Public housing==