Unregistered will

My uncle had recieved a property ( house) from unregistred will from his father in 1970. His father died in 1972. My uncles father has 3 sons and 4 daughters. Without my uncles notice the rest of family members tried the sell the property which was written to my uncle in d will. They ( only 3 members) have taken some money from other party and wrote a agreement. But they have not registered the property. The party went to court stating to register the site as they have written the agreement. After 33 years of long discussion in the courts finallly supreme court ordered my uncles family members to pay the amount which they have taken at the time of registration with interest also. finally my uncle have paid the whole amount. And he has been in position since last 43 years. He was not even changed the property name in favour of him, infact it is in his fathers name only. Now rest of the uncles brothers and sisters are claiming for property. Does my uncle own d property alone? or he has to share wit her belongings? does have chance to register the will now? and transfer property to others legally