peerage

Peers as a group; the titled nobility or aristocracy.

The rank or title of a peer or peeress.

“Two or three months more went by; the public were eagerly awaiting the arrival of this semi-exotic claimant to an English peerage, and sensations, surpassing those of the Tichborne case, were looked forward to with palpitating interest.

A book listing such people and their families.