Many times in history the same thing has been invented by different people or reinvented again and again. Necessity is the mother of invention. If you have never seen it before and it is new to you it is an original to you even if someone, somewhere, sometime has tied it before. And if someday you find that some had already tied it and ?named it? so what; you have observed the situation, have come up with the same solution and if it works, great, just have fun with it!
I once observed an egg sack on a sulfur mayfly, couldn?t find any fly pattern that matched what I saw so just tied some orange yarn on the butt of my sulfur mayfly and it works. I?m sure that someone somewhere has done the same thing.
Good Luck, have fun!

John