Þorp is from a Nordic origin, but I think has a more general meaning than just ‘field’ – see this as an example of the kind I have come across:

thorp 'outlying farmstead or hamlet, dependent secondary settlement'
http://ww.archipel.demon.co.uk/Tendring/names.html

It is in common use in areas of the north of England where the Vikings settled, passing into both place names and family names – e.g., Althorpe, Diana’s family vault, or Thorpe (English alleged cricketer).