" The way you use the commas should give your sentence its correct meaning — viz: The men, who were handsome, found partners. There, the relative clause tells us that all the men were handsome and all found partners. The men who were handsome found partners. With this restrictive relative clause, without commas, we are discovering something quite different: here, only the men who were handsome found partners. "

― Gyles Brandreth , Have You Eaten Grandma?