People who run a family business and call it, for example, Dawson & Dawson. That’s stupid. Call it The Dawson Company. Or Dawson, Inc.
What if another family member joins the business? Do you rename it Dawson, Dawson & Dawson?
The only acceptable reason for doing this is if the people involved are completely unrelated but both happen to be named Dawson.
Does Richard Dawson own Dawson’s Creek?