[Regia-NA] The fundamental Saxon Tunic

[Wulfhere se Treowryhta]

   Would anyone be so kind as to point me in the direction of a good 
working reference to a documentable Saxon tunic/trousers. I have made a 
set that visually resembles those on the Regia site but I'm looking for 
something that can guide me a little better in the details. I've seen 
reference to books running by lately but I have not been able to 
procure any of them. I'm lazy enough to buy a pattern if it's developed 
by a reliable source. Your references for fabric have been invaluable.

    I have noticed some illuminations that show laborers in some sort of 
an undergarment or short trousers. Is that what it is or is that a 
slave garb?