Hello, I am a solicitor with 20 years experience. I will try to help you with this.
as mentioned it was between two Lawyers
I want to bring it to a head
ie I might be the defendant ?
If you are a prospective defendant why would you want to bring it to a head?
because I want to sell my property and I cannot if I do not tell the prospective buyer that somebody has made a claim about the property
to do with "rights of way"
Yes you would need to inform any buyer of the right of way claimed by the other person, but if you try to force the issue then a claimed right of way might become an actual right of way to your disadvantage.