My grandfather executed a document that was registered stating that all the property acquired by all his sons, before and after the execution of the document will be considered as common property. He signed it and all his sons witnessed it. This was in the 1970s.
One of my grandfather's sons is my father. Both my father and grandfather are not alive for over 15 years now. My uncle (one of the other sons of my grandfather) is stating that based on this document he discovered recently, he is claiming share in all my father's earned property and I have to give him details of all the property held by my father or he is going to take us to the court.
I don't have a problem going to the court, but my concern is does this have any merit? Given that my dad was just a witness to the document and need not have known or agreed to the contents of the document.