wer

[…] the character of a horseman was inseparable connected with the knight—the military attendant of the baron, who was himself nothing more than the Wer, or Man, of the king—even the armiger, […]

Under the system of money compensation, the kindred of the slain must demand payment of the wer, or prosecute the feud. They had the right to the wer when paid, and must by oath release the slayer and his kindred from the feud.