Land Holland—Farewell

In searching some Court Rolls a few days since, I found some land described as "Land Holland" or "Hollandland." I have been unable to discover the meaning of this expression, and should be glad if any of your correspondents can help me. In the same manor there is custom for the tenant to pay a sum as a *farewell* to the lord on sale or alienation: this payment is in addition to the ordinary fine, &c. Query the origin and meaning of this?