He isn't the biological father apparently of her brother At least in the novel spoilers...
I don't believe that's to he treu the brother looks exactly like the duke
Apparently Camilla n her bro only shared same mother. Her bro was aware of it, but Camilla, iirc, doesn't.
Wow i didn't know that but how come the brother look exactly like the duke wow
Maybe it's just the artist's artstyle. The novel didn't explicitly mention how the duke looks like, but if it follows exactly how the novel explain, he should look older than the one in the manhwa and buffier than that.
Oh okey i get it thanks alot
Her bro looks so much like the dad. Striking resemblance really.