One person falsely claiming and filed a partition suit

Sir One of my 3 acre land of parental property is vacant land for prolonged years. It is not used as cultivation or any other purposes. Recently state Govt took it 21 decimal of said land by paying me the requited cost of Land officially after dully verified by the concerned Tahasildar. One person name was mentioned as Mr. gajendra in patta, who had died long back and was unmarried that time when sale deed was made. In sale deed of that particular Land, it was clearly mentioned that, one person named Gajendra was died long back and hence can not be a claimant and since he is unmarried no legal heir of Gajendra. After verification of documents by Tahasildar, I was only the claimant and no more person is claimant of said Land hence I got the cost of property by selling to Govt..for the Project One person who is a retired Teacher named as Rajendra officially,made an affidavit as Rajendra and stated that Gajendra and rajendra are one and same and name of Rajendra was erronousely written in Patta as Gajendra and asked me half of the cost of land. Since i did not pay any cost, he filed the partition suit in civil court and asking 1/3rd of the property. The same person also retired from Teachership and getting pension as Rajendra ( nor Gajendra) as per pension Order.The named person Rajendra @ gajendra filed suit against my old mother aged 94 years. Since its false case to extrct money from me, whether can he file against 94 yrs old, Please advise me sir what is the legal proceeding..Thank you Sir