Morgan was a member of the Brotherhood without Banners.
Morgan, Lem and Gatins confront Ray's group of Faith devout, asking them for food and supplies. When Ray claims that he has nothing of true value to give them and that he has many mouths to feed, they leave, and possibly were responsible for the slaughter of everyone, except for Sandor Clegane..
|Season Six appearances|
|The Red Woman||Home||Oathbreaker||Book of the Stranger||The Door|
|Blood of My Blood||The Broken Man||No One||Battle of the Bastards||The Winds of Winter|
In the books
In the A Song of Ice and Fire novels, there are several characters whose first name is Morgan (Morgan Hightower, Morgan Liddle, Morgan Martell), but none of them are outlaws or members of the Brotherhood.