Leatherhead
Possibly a Idiot.
I've never seen the "ad'" prefix before.
The only ones I know of are "d'" which indicates a person with a dragonmark. and "ir'" which indicates a noble born person.
Normally, the non-marked members of the house just use their house as a last name, unless they are House Tharashk (who just uses their family names) or talking with members from the same house (which again fall back to their family name instead of the house name)
Just not having a "d" has much of the same feel of what you were going for @MetaVoid . You are a member of the House, but not a Dragonmarked member (which I believe is something your character is concerned with)
The only ones I know of are "d'" which indicates a person with a dragonmark. and "ir'" which indicates a noble born person.
Normally, the non-marked members of the house just use their house as a last name, unless they are House Tharashk (who just uses their family names) or talking with members from the same house (which again fall back to their family name instead of the house name)
Just not having a "d" has much of the same feel of what you were going for @MetaVoid . You are a member of the House, but not a Dragonmarked member (which I believe is something your character is concerned with)