The fleur de lis design shows up all over the world with many meanings and uses as discussed in this wikepedia entry.
There’s no hidden patterns, unfortunately, but I do have one very special use of of it combined with another pattern that always brings a chuckle. I’m not sure what they were thinking when they built this stone screen. You can find it if you drive thru the lowest edges of Francisco Park, which is a huge neighborhood of mini mods west of Eastern Avenue and South of Karen.
Study it closely for me by clicking on the picture. Can anyone figure out the rhyme or reason? Is there a repeating pattern that I’m missing?