The second cloth also exists. It is kept in a church in Oviedo Spain. It has been in Spain shortly after 616AD and has been there and DOCUMENTED ever since.
Called the Sudarium of Oviedo, the cloth is blood stained with type AB, the same type as the blood stains on the Shroud. Several studies have shown that the positions of several of the Sudarium's blood stains coincide exactly with matching blood stains on the Shroud of Turin
Sudarium of Oviedo
Studies indicate the Sudarium was placed over the head while the body was still on the cross, then remained on the body while the body laid supine, and that it probably remained on the head for approximately 45 minutes before the body was moved and the Sudarium removed.
How the Sudarium apparently
was wrapped around the head
and bound in place
The theory is that the Sudarium provided a convenient cloth to bind the jaw closed (under the beard and over the top of the head) when the body was laid in the tomb on the Shroud. It is speculated that the resurrected Jesus pulled the top of the Shroud off uncovering himself, got up from the shelf where his body lay on the bottom of the Shroud, moved a small distance away, and pulled the jaw binding off, leaving it seperate from the other grave cloth. The fact that the Sudarium was apart from the other cloths gave an indication that the body was not stolen or moved by others, but moved on its own volition, and made it remarkable enough to be recorded in one of the Gospels.