Once Upon a Haunted Horn and Hoof by Elizabeth Rose

A marriage that is meant to align feuding clans is about to be challenged by a ghost!

Keithen MacKeefe works at the Horn and Hoof Tavern in Glasgow, owned by the crazy old man, Callum MacKeefe. When a ghost starts causing trouble in the tavern, Callum comes up with a plan to quiet it. To Keithen’s dismay, the plan entails him marrying the granddaughter of the ghost.
Lorna MacNeil isn’t happy about her betrothal to a MacKeefe since they are mortal enemies. It all started when the old man, Callum MacKeefe killed her grandfather. She quickly finds out the betrothal isn’t just about alliances. It is because the ghost of her grandfather is haunting the tavern, and the only thing that will stop him is giving him something that the MacKeefes will never agree to hand over.