St. Mungo, also known as Kentigern, was a bishop in the sixth century. He founded the see of Glasgow and was the grandson of a British prince. He also is the patron of Father Brown's parish in The Wrong Shape.
In a number of the FB stories, such as "The Wrong Shape", "The Sign of the Broken Sword" and "The Honor of Israel Gow", it seems small details; things that are incomplete, the wrong shape or just slightly off, aid Father Brown in the solving of the mystery.
Obviously, this is especially key in the story currently under discussion. One of the first objects of the wrong shape to catch Father Brown's eye was an oriental dagger. Some of his remarks on the subject struck GilbertGirl, Algernon and I as quite interesting, such as:
"Don't you see it is the wrong shape? Don't you see that it has no hearty and plain purpose?"
"It's very beautiful," said the priest in a low, dreaming voice; "the colours are very beautiful. But it's the wrong shape."
"What for?" asked Flambeau, staring.
"For anything. It's the wrong shape in the abstract. Don't you ever feel that about Eastern art? The colours are intoxicatingly lovely; but the shapes are mean and bad-- deliberately mean and bad. I have seen wicked things in a Turkey carpet."
Which begs the question: What shapes are mean?
Eastern culture plays a VERY significant role in this story and brings about several other interesting quotes:
"When first he said `I want nothing,' it meant only that he was impenetrable, that Asia does not give itself away. Then he said again, `I want nothing,' and I knew that he meant that he was sufficient to himself, like a cosmos, that he needed no God, neither admitted any sins. And when he said the third time, `I want nothing,' he said it with blazing eyes. And I knew that he meant literally what he said; that nothing was his desire and his home; that he was weary for nothing as for wine; that annihilation, the mere destruction of everything or anything--"
"...he dealt much in eastern heavens, rather worse than most
"The Christian is more modest," muttered Father Brown; "he wants something."
While we're on the topic, GilbertGirl, Algernon and I were wondering earlier, was Chesterton in any way prejudiced against the east?
Mrs. Quinton is an interesting character, although you don't see much of her, "that's the kind of woman that does her duty for twenty years, and then does something dreadful." What do you think of her? Why did she marry Mr. Quinton?
Also don't miss GilbertGirl's dramatic ChesterTrance involving this story.
P.S. GilbertGirl, Algernon, I'm quite sure I forgot things, do fill in.