Walkthrough for Remember My Family of Red Dead Redemption.
1. Mount up and go to Blackwater to find Agent Howard in the train station. His location will be marked with question mark labeled "Remember My Family", if you zoom on Blackwater in the map you can find it.
2. A purple mark pointing to Lake Don Julio will appear on your map, go there to meet Emily Ross, wife of Edgar Ross.
*. Edgar Ross is the man who kidnapped Abigail and Jack as a boy and ordered the attack on the farm.
3. Go to Riodel Toro which is marked with purple mark in the map.
4. Keep going to your next purple mark in the map. This one is closer.
5. Deal with him and enjoy the side mission in the game, you are officially done with important stuff and main missions.