Earls Just Wanna Have Fun by Merry Farmer

Lady Shannon O’Shea has seen all of her sisters married off by their brother, Fergus, in order to keep them out of trouble, and she is determined not to encounter the same fate. She has far too many other things on her hands, including her secretive, scandalous, and growing beer brewing business. She is convinced that the end of the century will be the beginning of a new world for women, and the last thing she has time for is a man.
Enter Lord Colin Crenshaw, Earl of Stamford.
Lord Colin is in Ireland to serve as best man for his cousin, Lord Blackburn, but it is the bride’s sister, Shannon, who catches his attention. Shannon is older than him, wiser than him, and prettier than him (although just barely, in his opinion). She owns a small brewery, he loves beer. He thinks they’re a match made in heaven.
Now all he has to do is convince her….