For IPC and punishment for submitting wrong affidavit in government office

Under what circumstances the Affidavit was filed before the authority by your uncle? and how the authority acted on mere productions of Affidavit? 

Obtain certified copy relevant records and file a criminal complaint under section 200 of Criminal Procedure Code, 1973 before area Magistrate through a local prudent lawyer.

It appears from the post that your uncle furnish your brother's name for mutation in your ancestral land to make unjust enrichmen in the ancestral property. What is disturbinng is how the authority acted upon a mere production of Affidavt to change the name in immovable property, as even conveyance of land through Power of Attorney was held by the Supreme Court as illegal, IT HELD "The illegal and irregular process of `Power of Attorney Sales' spawns several disputes relating to possession and title, and also results in criminal complaints and cross complaints and extra-legal enforcement and forced settlements by land mafia:.