Fionn MacCool's - Edmonton Mayfield is located in Stony Plain, Canada on 10813 170 St NW. Fionn MacCool's - Edmonton Mayfield is rated 3 out of 5 in the category american in Canada. The Largest Irish-Canadian Restaurant Brand. Our warm hospitality welcomes you to a place where you can enjoy the best of both made in-pub food and drink in an atmosphere that encourages sharing good times with family and friends.