1. our father or grandfather might have paid property tax all these years, you can find the property details in the property tax receipt.
2. The electricity consumption connection would be on your grandfather's name or your father's name, this would provide you the property details and you can get a copy of such details .
3. Your ration card would be having the address of the property from which you can extract the details of the property from the village revenue records or from the Tahsildar's office.
From any one of these records you can find the property details including the survey number of this house, by which, you can get an encumbrance certificate.
From the encumbrance certificate you can find the document number and the name of the title holder.
You can get the certified copy of the registration sale deed document or the title documents from the registrar's office.
After that you can go ahead with the proposed transfer of property on whosoever's name as per your desire.
2 question
Sir we are planning to buy a plot
How to find the survey number of the plot ...which seller is showing ,the seller is big influenced person and syndicate with most of private and govt surveyors
You may ask the vendor to identify the property now being sold along with the copy title deed document.
Get an encumbrance certificate of the property to find out any subsisting encumbrance on the property.
Verify the property details from the village revenue officer, get yourself fully satisfied or get a legal opinion from a local advocate along with all the documents and then decide about purchasing.