These kinds of questions often end in court. You have a good argument that you acquired the land by adverse possession as you were openly, notoriously and adversely using it for more than 21 years continuously. However some landowners will dispute this with various arguments including not knowing it was their land. I think on the whole you are in the right but be prepared for some push back.
Answered on Feb 29th, 2016 at 5:17 PM