Arthur Morgan

The life of an outlaw is all he has ever known. Dutch met Arthur when he was just 14 years old, a particularly damaged and angry young delinquent who had been on the streets ever since losing his parents at a young age. Arthur became Dutch's first real protégé; seemingly a lost cause who, with a little mentoring and structure, transformed into his most dedicated and capable enforcer. He is sharp, cool-headed, and ruthless, but with his own sense of honor. A man who prides himself on getting the job done.

Source: https://www.rockstargames.com/reddeadredemption2/features/vanderlindegang