rock, Dean. I'm not familiar with it but I think I'll have to check it out.
How did it get it's name?
Not sure. I found the unofficial name on www.listsofjohn.com/. It's a fun climb!
Before finding this peak on LOJ, I was aware of another Aiguille, known as Aiguille de Fleur in RMNP just south of Lake Verna. Seems to be a common prefix to some of the European mountains, and it does break up the monotony of "point" or "spire".
As to who named it, no guesses. For the unofficial name to be used on LOJ it either had to be found in a published guide or just as a well known local name. I've never seen mention of it elsewhere, and since it has some climbing possibilities, its probably in a guide.
I've had on my list for a little while now the "triple crown of greyrock" hike: hitting the three rocky lumps surrounding the meadow. It's interesting to see some information on one of those other lumps.