The Massachusetts Petition For Appointment of A Testamentary Trustee is a legal document that is used by an individual to petition the probate court in the state of Massachusetts for the appointment of a testamentary trustee. This document is used when someone dies and leaves a trust in their will that requires a trustee to manage the trust assets and distribute them according to the terms of the trust. The petition comprises several sections, including the names of the deceased and the petitioner, the property involved in the trust, and the reasons why the petitioner believes they should be appointed as the trustee. There are two types of Massachusetts Petition For Appointment of A Testamentary Trustee: Regular and Summary. The Regular Petition is more in-depth than the Summary Petition, and requires more information regarding the trust, the deceased, and the petitioner. The Summary Petition is more straightforward, and can be used if the trust is small and the petitioner meets all the requirements for appointment as trustee.