Original: A member of the House of Lords was known as a pair (see also pairie), or officially as a member of the Prussian House of Lords (Mitglieder des preußischen Herrenhauses, or MdH).
Simplified: A member of the House of Lords was known as a pair, or officially as a member of the Prussian House of Lords (Mitglieder des preußischen Herrenhauses, or MdH).