Unpeer

[…] to destroy the king and parliament; disinherit his royal posterity; unpeer all the lords, and level them with the dust; […]

[…] not that he thought it a degradation for peers to sit in the House of Commons, but it was a degradation to the peers of Scotland to give them liberty to unpeer themselves, and to descend from the order to which they belonged.

When the Earl of Selborne died, who as Sir Roundell Palmer had been made Lord Chancellor, his son, a prominent M.P., declared he would not go to the Upper House, that he would unpeer himself.