• Quelle www.archaeology.ws/roman.html
  EIDUMANIS Possibly a Latinisation of Witham, known in the medieval period as Widma or Withma Ekwall 1960, 527. The ending suggests that there may have been an ending in OE ey "island". The name might therefore have been "Withmaney"

• Querverweis, siehe dazu auch Widdum unter Ortsnamen