Saint Laurent last operated a restaurant in Portland called Uncle Billy’s Resto-bar at 653 Congress Street in the space currently occupied by Kushiya Benkay. Uncle Billy’s closed in 2007. He also had run restaurants in South Portland, Portland and Yarmouth in the past.
For more background on Saint Laurent and the history of his restaurants see this 2015 article in the Press Herald.
Saint Laurent is the co-author of the book Uncle Billy’s Downeast Barbeque Book.