The vibrant Irish public house of the nineteenth century hosted broad networks of social power, enabling publicans and patrons to disseminate tremendous influence across Ireland and beyond. During the period, affluent publicans coalesced into one of the most powerful and sophisticated forces in Irish parliamentary politics. Among the leading figures of public life, they commanded an unmatched economic route to middle-class prosperity, inserted themselves into the centre of crucial legislative debates, and took part in fomenting the issues of class, gender, and national identity which continue to be contested today. From the other side of the bar, regular patrons relied on this social institution to construct, manage and spread their various social and political causes. From Daniel O'Connell to the Guinness dynasty, from the Acts of Union to the Great Famine, and from Christmas boxes to Fenianism; Bradley Kadel offers a first and much-needed scholarly examination of the 'incendiary politics of the pub' in nineteenth-century Ireland.