I am really happy with this blog, great info on 14th century "smocked" aprons!
And a lot of other great info as well ofcourse ;-)
She also found a picture of an extant piece of 14th frounced (or smocked)piece of linen, described as a Sudarium.
After some searching on internet Wikipedia translated Sudarium as being:
Sudarium is a Latin word, literally meaning 'sweat cloth', used for wiping clean.
In Christian liturgy, the term has been used as a synonym for several textile objects:
*The original maniple, a cloth of fine quality to wipe away perspiration, or an ornamental handkerchief which was seldom put into actual use, but was generally carried in the hand as an ornament as was commonly done by people of rank in ordinary life.
*The predecessor of the humeral veil.
*The predecessor of the vimpa, a veil or shawl worn over the shoulders of servers who carry the miter and crosier in liturgical functions when they are not being used by the bishop.
*The cloth suspended from the crozier at the place where the bishop would grasp it, still depicted in ecclesiastical heraldry and used by cistercian abbots. Also called pannisellus.
*The a veil used by the subdeacon to hold the paten with: a pall(a) or mappula, palla, the forerunner of the chalice veil, the ends of which he threw over his right shoulder.