Wetheman or Vedeman (died c. 1170) was a Danish nobleman who in 1151 or 1152 founded a lay confraternity in Roskilde to help fight the pagan Wends.
[1] He also played a prominent role in the crusades and wars of King Valdemar I and Bishop Absalon of Roskilde.
The confraternity apparently had the right to seize any ship as required so long as the owner was recompensed with an eighth of the booty.
[2] Saxo credits them with achieving many victories over numerically superior enemies while sustaining little or no loss.
[2] It may also have had some characteristics of a guild formed by the merchants of Roskilde for their protection[1] or of a town militia.