Probably one of the least evil members less evil than Marybeth. He just took care of horses and saved Arthur and got gang some money also he find out who kidnapped Jack.
I feel very sorry for him. His death was very early in the story, when he wasn't even fully accepted into the gang. If his death was after he was completely accepted, and we had some missions with him, Kieran's death would be more impactful.
Probably one of the most innocent members of the gang, and probably the worst and most gruesome death. He didn’t have too much contribution though. I liked him, but I don’t miss him