Oklahoma law, in Title 12, Section 1053, allows certain family members to file a wrongful death claim when their loved one’s death was caused by another’s wrongful or negligent act. Typically, the person responsible for filing a wrongful death lawsuit is the personal representative of the deceased’s person’s estate. This is often a close family member such as a spouse, parent, or child. If the deceased did not have a personal representative, the court may appoint one.