Land litigation

Hello,

Your stay on the said land was more than 30 years. So you can claim the adverse possession. Contact local advocate and find out the possibility as per local state government law.  

Whether the graveyard is "common"  or "private" ? If it is "common" it is to be used by one and all i.e., public and you should " socially & morally"  (but not "legally") spare from encroachment /illegal occupation despite the fact you have adverse possession.

Admittedly, the encroachment was unknown to the parties. It cannot be said that the possession ha been "open  and hostile"  and hence lacks the requisite ingredient to be adverse. 

Even they claim their portion of land to have been encroached by you way back 46 years ago, since you have purchased the property and have been in an uninterrupted and peaceful possession and enjoyment of the same till this date, further your possession is open and hostile to the alleged  original owner, under the law of adverse possession also you can get your title declared through court of law if they are putting more pressure on you in this regard. 

thanks everybody for your valuable advise...