It might be referring to the "Triumvirate" from the Balverine Order book... Not quite sure though...
It is. It is even refered like that.
ok in the library of the castle in fable 3 it has statues saying about the three hero's, but in fable 2 is hammer is a girl and the hero of strength but on the statue says was a man? it also says they left a pistol a sword and a gauntlet ? plus it says that the hero of skill died but reaver is alive?
Yup, but they're not them, the Triumvirate is way back.
They left The Black Dragon, Quicksilver and The Gauntlet (It was unnamed, a tradition between Gauntlet Mages)
In the actual game, only The Black Dragon is obtainable through the Understone DLC, more specifically as a prize in the Shooting Range of the Bandit (or Mercenary?) Camp. Oddly enough, it is mentioned in The Balverine Order that this weapons were stored in a faraway shrine, and that if they remained out of it too long, it's power would dissapear. Oh and also the bandits (mercenaries?) could not have taken it, as there's like a fire forcefield thatkills you if you try to take it but your reasons are dubious.
... ermm nice gloves.