The story of three brothers from annesburg (Red Dead Redemption 2)

Hello gentlemen! During another trip, I came across a camp where the rest of the man...this time he never ran quite friendly and invited to sit down with him and told me a story about three brothers and their annesburg who kill each other al over greed. One of them allegedly hid the gold and to get to him as tips, he made marks on trees. His my companion had finished and rode off about his business. I went further East and discovered the same snooty hobbit hole. And all anything, but here accidentally discovered the tree in front of the house with a label in the form of a cross and veeru either the dash or the unit. Next to the tree, I found nothing...this is before I finished the quest because IMHO hard to find among billions of trees labels :PP. Maybe someone knows about this story and MB has moved it? very much I was intrigued