Justice Rajender Kumar held the brother duo, Suresh Pal and Angrej Singh, guilty of strangulating Pal's daughter, who married a man belonging to another community, under Section 302 (murder) of IPC.
The court also imposed a fine of Rs 15,000 each on the accused, public prosecutor Kuldeep Pushker said.
The incident took place on November 2, 2005 at Bhura village in the district. Subsequently, a case was registered against three persons.
The third accused, Bhupender, died in jail during the trial.