We have a property duly in joint name of my mother and father's youngerbrother purchased 1977. The whole amt was paid by mother and out of my father's affection he induced his brother's name as joint owner. We had faimly settlement in 1994 (orally) and he signed the relinquishment deed (unregistered as of now). He filed a case in court denying any settlement and deed although admitted in his cross examination that he has signed the deed. My question how can we prove our title and how can we prove that relinquishment deed is valid without registration as he has admitted it. Please advise urgently