The Massachusetts Affidavit of Warship for Mineral Rights is a legal document used to establish the rightful heirs of a deceased individual who owned mineral rights in the state of Massachusetts. This affidavit is crucial in determining the ownership and distribution of mineral rights among the heirs. In Massachusetts, there are two main types of Affidavit of Warship for Mineral Rights: 1. Voluntary Affidavit of Warship: This type of affidavit is voluntarily executed by the heirs of the deceased mineral rights owner. It outlines the deceased's ownership of mineral rights and provides pertinent information about the heirs, such as their names, addresses, relationship to the deceased, and their respective shares of the mineral rights. This voluntary affidavit is often used when the heirs wish to establish clear ownership and avoid potential disputes or complications. 2. Court-Ordered Affidavit of Warship: This type of affidavit is ordered by the court when there is a dispute or uncertainty regarding the rightful heirs of the deceased mineral rights owner. The court will use this document to determine and confirm the legal heirs of the mineral rights. This affidavit requires a thorough examination and investigation of the deceased's family history, genealogical records, and other relevant documents to establish a clear line of inheritance. Keywords: Massachusetts, Affidavit of Warship, Mineral Rights, ownership, heirs, deceased individual, distribution, Voluntary Affidavit, Court-Ordered Affidavit, ownership disputes, court, genealogical records, inheritance.