I've never come across one, that I know of, but very aware that I probably have and just don't know it.
There is also the fact that there are, very broadly speaking, two types of peadeophiles.
A) the ones who wish to abuse and do harm to children.
B) the ones who admit to being "attracted to children" but claim would never, ever act upon it, and some even feel a deep sense of shame about it.
I saw a documentary once which touched upon the second type. One of them (in America, and talking openly on camera) basically moved to the middle of nowhere in order to keep him away from any kids to remove any temptation.
Terrifying.
(Also, of course, is the fact that these ones who claim to not be a danger to anyone as they would never act on it, are most likely in possession of indecent images, driving the demand for that, and therefore, very much doing harm.)