@Hierophant He knows. From what I pieced together, either he knew from the beginning or his brother told him early on when he found him. That's one of the reasons he gave him a count title even though public knowledge is he's a commoner. So it would be normal for him to be near his brother as his "ally". They're also quite comfortable with each other as shown in some early chapters. Which suggested to me ML definitely knew they were brothers. TBH I even think that the ring he gave Edele is some kind of heirloom from his mother. But maybe I'm just reaching at this point lol