My grand father took agricultural land on mortgage. in 1925. The mortgagor sold the land to someone through registered sale deed without mentioning about the existing mortgage which was then existing. My grand father file case in the court to quash the sale deed as it did not mention about the existing mortgage. The sale deed was quashed by the court. The purchaser of land did not file appeal against the court decision. From that time i.e. from 1920 the land is in my possession. Now the mortgagor's great grand son wants to resume the possession of land by paying the mortgage amount after 90 years. Can he do so?