Remember My Family is the final quest in the chain of story missions of Red Dead Redemption. In this guide, we describe its detailed walkthrough. Head to Blackwater to meet the person marked with a ? on the map. He will tell you that the Ross family has moved. Your task is to find Edgar Ross's wife near Lake Don Julio. Head to the Remember My Family marker.
Edgar's wife will say that he is not home, but she will tell you that he went hunting on the south side of the San Luis River with his brother. Head to Rio Del Toro to find Ross's brother. Philip will tell you that Edgar went down the river to hunt ducks. Go down to the river and run along it to find Agent Edgar Ross. After talking, you agree on a duel.
Use the Dead Eye ability for a guaranteed win in the duel, then watch the final in-engine cutscene.