Mannahnin
Scion of Murgen (He/Him)
I don't recall a specific example, but I'm sure there's probably at least one or two Irish legends that involve a "public house" - possibly as early as the 7th and 8th Centuries the Irish legal system (Brehon law) had actual regulations on how many sheep, cows and barrels of ale a public house was required to have on hand. Although the term "tavern" traces back to Roman times, I wouldn't be surprised if the basic concept existed in Ireland for quite a while before that.
Free Public Hostels in Ancient Ireland
Free Public Hostels, from A Smaller Social History of Ancient Ireland, by P. W. Joyce, 1906