peer of the realm

plural peers of the realm

1. UKAny member of the House of Lords who is not a life peer.
2. UKhistoricalAny member of the hereditary peerage of the United Kingdom, (chiefly) of the Kingdom of England.

   All Peers of the Realm being look'd on as the King's Hereditary constant Counsellors.

   1707, John Chamberlayne, Angliæ Notitia, 22nd edition, iii. iii. 276

   1 more example

   The proudest Peere in the Realme shall not weare a head on his shoulders vnlesse he pay me tribute.

   1591 (date written), William Shakespeare, “The Second Part of Henry the Sixt, […]”, in Mr. William Shakespeares Comedies, Histories, & Tragedies. […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, →OCLC, [Act IV, scene vii], line 117

3. Any similar member of the nobility of other kingdoms.