I would have said him, but I could have sworn he went public with his identity a few years back. Guess I’m misremembering.
Uh oh! I guess the mods are going to be giving me a free custom title, soon:
Cheshire Human
DRONED
The guy in the costume in Roger Patterson’s *“Bigfoot” footage. Bob Hieronimus claims it was he, and may well be. But I don’t think it’s been proved either way.
*Or maybe that should just be “Bigfootage”.
It might be a woman.
May not have existed. The Shotgun Man story appears to be an urban legend.
My guess:
They’re dead (possible, but not probable) or successful and/or famous in a way that they feel this would not reflect well on them.
She died a few years ago and it warranted a small article in the local section.
That’s the one I was going to say. This is a fascinating article on the mystery. My guess is that *somebody *must know who he was as it seems pretty likely that he was a spy.
Gavrilo Princip
-the Black Dahlia’s killer
-the Boston Strangler
Whoever actually started the fire at the Hartford Circus, as well as that of Our Lady of the Angels. (In the latter case, a student initially confessed then recanted, apparently afraid of his parents. Some of the details he gave were ones that weren’t made public that he couldn’t have known otherwise.)
For an American that phrase seems to refer to the unknown person who fired the first shot in the American War of Independence, on hearing it I immediately thought of Gavrilo Princip as well.
Edited to add that Guinastasia is apparently American as well, thought maybe it was a European/American thing.
Yep, I’m an American, and I know its origins, but it still makes me think of WWI, since that’s how most people seem to use it. (As the Revolutionary War was a local thing, while WWI was, well, a world war.) 
I momentarily considered starting a thread on the topic (what incident you think of when hearing that phrase) but quickly realised the apocalyptic fireball of misunderstanding and patriotic chest-beating it would inevitably turn into… 
The pilot who blasted a hole in the USS Stark.
Hey, we try. I added the bit about John Hammond identifying him as a “kid from Philadelphia” (that is also my photograph). Dude does NOT drop character. I shot his show at that venue and was adjusting lights, and he was in character during the sound-check. And he visited the Kansas City Public Library when he was here and a friend of mine who works there said he looked through the newspaper microfilms in character.
Ain’t nobody getting a straight answer out of the guy.
Mine is “the person who set up the camera to capture the 47% video that tanked Mitt Romney’s Presidential ambitions”.
Is it possible for a Pulitizer to be awarded anonymously?
I don’t know how conclusive it was, but there was this development a couple of years ago. I never heard anything else about it, however.
Rollo Tomasi
Grafitti is illegal is the reason, so people tend not to spread it around too much. The name, that is. 
I didn’t see anyone mention L’Inconnue de la Seine - the girl the CPR doll was based on.
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Yeah I found it a bit hard to figure out too: Unknown Scout - Wikipedia