ClipArt ETC
"Genouillère, middle of 13th century. The knee-piece, of hammered iron, introduced toward the close of the thirteenth century, and worn at first over the chausses of mail, being held in place by a strap passing round the leg, and consisting at first of a dish-shaped or slightly pointed roundel." -Whitney, 1911

Genouillère

"Genouillère, middle of 13th century. The knee-piece, of hammered iron, introduced toward the…