The present brief study revisits a document dated 1233 AH, concerning Mirza Mansur Khan Behbahani, the governor of Behbahan and Kohgiluyeh during the reign of Fath-Ali Shah Qajar. The narrative of the document is as follows: initially, Mirza Sultan Mohammad Khan, father of Mirza Mansur, constructed his governmental residence on a piece of land of uncertain ownership known as the “Bagh-e Mir Shah Mir.” Subsequently, his son, Mirza Mansur Khan Behbahani, built his own governmental residence on another section of the same land. At the same time, he undertook an investigation to determine the legal owners of the property. It was established that the land belonged to two families of the Tabatabai Sayyids, from whom he purchased the land and formally settled the ownership. The present document represents the sale contract and settlement agreement of this land. Mirza Mansur Khan belonged to the lineage of the governors of Behbahan and was a prominent political figure in Fars during the reign of Fath-Ali Shah Qajar, having also lived through part of Mohammad Shah’s reign. His daughter, Gowhar Taj Begum, was married to Najaf Qoli Mirza Vali, son of Hossein Ali Mirza Farmanfarma. Among the significant events in Mirza Mansur Khan’s life was the visit of Fath-Ali Shah Qajar to the region of Behbahan and Kohgiluyeh in 1245 AH due to certain disturbances in the province of Fars. Mirza Mansur Khan was entrusted with guiding the royal entourage during this journey. A letter dated 1245 AH, bearing the seal of Farmanfarma, was addressed to Mirza Mansur Khan, reporting on the Shah’s visit to the area and assuring him of safety and order. This letter was part of the archives of Sardar Amjad Mansouri Tabatabai and was recently donated to the Central Library of the University of Tehran. As it is currently under restoration and organization, it has not yet been cataloged