Some Clothing of the Middle Ages -- Hose/Trousers -- Skjoldehamn A "bog-find" that has been Radiocarbon dated to about 995-1029 CE. These appear to be a draw-string design. The "trim" is woven into the material of the leg.
Thorsberg Trousers, how to take measurements, sketch own pattern for it.
This is a really well-researched article (verified with the SCA Librarians of Alexandria FB group) on Viking trousers, with some patterns at the end!
Skjoldehamn These narrow Viking pants from the 11-13th century are very simple. A rope tied on top of the pants was used to hold them up on the waist. For greater comfort, the pants went slightly higher on the butt than in the front.