Mrs. Colman's Pew

I saw some Colman's Mustard in a store today. My mother said, shortly before she died, that she and my father had entered a Church, where he saw a reserved pew. He said tosh and nonsense, one doesn't have privileged pews in Church -- and to her dismay, took a seat. Along came a Mrs. Colman -- whose pew this was. She was most polite, and didn't mention the invasion of her pew. Then she invited my parents to lunch. It was Mrs. Colman of Colman's Mustard.