Following the death of your wife, her parents are claiming her gold ornaments. According to Section 15 of the Hindu Succession Act, if a Hindu woman dies without children, her property, including gold ornaments, generally devolves to her husband. Ornaments received at the time of marriage are typically considered the wife's property and pass to the husband in the absence of children, unless specifically inherited from her parents. Your father-in-law likely has no legal right to claim these items.