Bedakhali attempy by Public Notice

Can my nephew (sister's son) bedakhal ME by public notice from an ancestral property that I inherited in its entirety in 2000 under terms of my father's probated will' although HE has never lived in, used, occupied, possessed, owned any part of the property through any instrument or process save by relying on another unmarried sister's will. This sister was living in this property in 3 rooms bequeathed to my sister in my father's will without mutation. Sister's will has not been probated inspite of repeated requests or any copy served on me or shown to me? I have full possession since 2000.