Men-at-Arms, Fourteenth Century
Next, round plates of metal, called placates or roundels, were applied to shield the armpits from a thrust; and sometimes they were used also at the elbow to protect the inner side of the joint where, for the convenience of motion, it was destitute of armour. An example of a roundel at the shoulder will be seen in one of the men-at-arms in the woodcut
John of Eltham
Illustration the sepulchral effigy in Westminster Abbey of John of Eltham, the second son of King Edward II., who died in 1334. Here we see first and lowest the hacqueton; then the hauberk of chain mail, slightly pointed in front, which was one of the fashions of the time