Hi
The claim of the plaintiff can be maintainable only if she is in the fourth generation as the ancestral property means a property inherited before 4 generations. In this case it should have been inherited by the grandmother from her parents.
If the property was self acquired by grandmother or her husband it is not ancestral property as per Hindu succession law. Hence her claim is not maintainable.
The genealogy. Mentioned is not sufficient to prove right in ancestral property if it was self acquired property. Hence the claim not maintainable.
The above defense are to be taken on th base of the facts and your advocate will do th needful
The property has been already alienated by executing sale deed.
Now th court will have to decide it on merit of the case whether the sale is valid.
Since both sons/legal heirs then were alive at the time of sale,so the question of their legal heirs and minor heir doesn't arise.
The sale deed is executed before the registrar and it is based on th facts parties submitted. The registration is valid as it fulfilled the requirement but the title is the question and it has to be decided by the court. If the court decides the right in th share the minor was alienated it will pass the order to invalidate the sale and cancel the registration.
The seller can be sued for your loss and compensate th minor for her share if court conclude so.
The need of the hour is to defend and safeguard your right.