Interesting. When traveling through Europe it was a kind of family quiz game, recognizing the saints by the symbol of their martyrdom - Barbara would have little towers on her dress, or Catherine would have a wheel, or Agatha would have her breasts on a platter, or Lucy ditto her eyes, and so on. The only other thing is the "only when I laugh" bit in which Sebastian is always depicted full of arrows, although he survived that particular assault to die later. How, I don't recall...