Query against a property issue

Are you in possession/occupation of your property? If not, how you are connected with the issue?

How is that the property is ancestral? 

Other than the daughter M, who are the legal heirs to the grandfather?

Please refer to the above doubts to clarify you.

Other than daughter M, my grandfather has 4 sons.

I am not in possession right now, but my father is the only child alive and he is one of the children of my grandfather.

The property was of my grandfather..

Prima facie, the property is not ancestral. As such, it has devolved upon all the legal heirs after the lifetime of the grandfather. And such, they have the right to enforce their claim unless they had relinquished the same through a registered deed.

No registered deed was signed, everything was by verbal communication only.

The legal heirs of the deceased legal heirs can very well claim a share in the property as a right.

Therefore instead of allowing the issue to proceed through civil long stretched litigation, you may try to find solution through amicable settlement. 

Very well analysed and advised by learned experts.

It is better to consult and engage a local prudent lawyer for better appreciation of facts / documents, professional advise and necessary proceeding.

Thank you everyone for your valuable comments.