For the past 30 years or so, Frank Conway has been in charge of running the River House Hotel in Dublin. But in 2015, he decided it might be time to hang up the keys. His son Nicholas was slated to take over, and the Conway family, which included Frank, his wife and business partner Sheelagh Conway, and Nicholas, designed a succession plan.  The family created a company called Spiritus, which would be owned by Nicholas, as a vehicle for transferring control to their son. The three signed a partnership in 2016 that gave control of the bar and nightclub…