When was knighthood invented?

Answer 1

it all began in the middle ages. According to tradition, the first Order of Knighthood was The Order of the Silver Tower, established by the first High King, Balmord the Red in 653 BASuccintly, a knight was a professional soldier. The old "citizens' armies" of Antiquity had been replaced by professional armies. This trend was reinforced by the appearance in the 8th century of the stirrup, which made mounted men much more powerful and turned cavalry into the most important element of medieval armies. But being a mounted soldier was expensive, since it required enough income to buy and sustain a horse and the equipment (armor, weapons) to go with it. Thus, those who were too poor to provide this service became mere peasants, attached to the land.