Knightdom

Only a few years before his birth on May 18, 1824, in the baronial castle, the tiny but largely autonomous knightdom had been annexed by Bavaria during the Napoleonic wars.

Source: wiktionary

Indeed, in the 1830's, in his diary Ranke himself suggested that a world history be written which would emphasize the growth of population and stress economic and cultural activities; colonization, knightdom, the building of churches, art, and religion in the Middle Ages; agriculture and public works in the eighteenth century and the “tremendous development of industry and highways” in the nineteenth century.

Source: wiktionary

The dregs of knightdom and various men-at-arms shared the tables and benches in noisome sleep.

Source: wiktionary

“Well, Norman, I'm delighted,” he said, taking Mailer's arm for a moment as if, God and knightdom willing, Mailer had finally become a Harvard dean and could be addressed by the appropriate limb.

Source: wiktionary