Greg Tebrich is a very good friend of mine, and it was inconceivable to me that he would try to claim someone else's land as his own, so I asked him about it. His title shows he owns the whole 6 acres, and it pre-dates any paperwork you may possibly have, so it appears YOU are trying to sell HIS land! Greg has no intention of selling ANY of his land at all!
I can see why you would be upset by having been taken advantage of by the unscrupulous person you bought the land from, and the worse one they bought it from... but Greg has every legal claim and TITLE to the land, and had it first, so you should respect his rights and not malign him. If you have a problem with it, get your money back from Monica!