Actually, Douglas, the very early boobies were designed as a nymph, or rather as a sort of caddis to be fished very close to the lake bed without snagging. In that guise it was very effective. Later on, of course, it was "improved" by adding marabou tails and wings in all sorts of garish colours.
Many years ago I created a fly which I called the Magic Hare. It was at the time of the great upsurge in interest in competition fishing. This fly incorporated white wool breathers fore & aft as per the Shipmans with a body of hares fur and a red game palmered hackle. Worked a treat on the top dropper.
Some while later while preparing for a trip to Lough Conn I created what I felt was a typical Irish pattern. It arose out of a trip to the pub where, after 4 pints of Ruddles County, I had the idea for this fly. I headed home, poured myself a generous measure of Famous Grouse, and tied the fly. On a size 10, tail of golden pheasant crest, fine oval gold tinsel rib, body in 4 parts from the tail - yellow, ginger, fiery brown and claret seals fur, palmered red game cock hackle with a few turns of claret cock hackle in front. I called it the Ruddled Grouse, and it has caught fish every time I've used it in Ireland, and often has been the star of the week.
With many of the classic traditional patterns it is easy to see how they got their names. They are tied in "families" and I suspect that someone ran out of a certain material - eg mallard bronze, and tied up the fly using the next best thing and there we have the grouse family.