[1][2][a] The manor house was once owned by Antônio Lacerda de Chermont, the Viscount of Arari, before being transferred to his niece, who was married to Domingos Raiol, the Baron of Guajará.

[1][3] In 1950, the manor house was listed by the National Historic and Artistic Heritage Institute (IPHAN), with inscription number 274, through process 327-T-1943.

[4] In the middle of the 19th century, it belonged to the Viscount of Arari, who made improvements, such as doors and windows with iron railings bearing his emblem, and was active in public life, holding positions such as president of the province.

[5][6][b] When the Viscount of Arari died, the building was inherited by his niece, Maria Vitória Pereira de Chermont, who married Domingos Antônio Raiol, the Baron of Guajará, from whom the manor's current name comes.

[6][7] In 1879, the Baron of Guajará founded the Quinze de Agosto Society at the manor, which participated annually in the festivities commemorating the province's accession to Brazilian independence.

[6][1] The second floor, the building's main space, contains the family's social and intimate areas, such as the baron's study, the dining room and the bedrooms.