Coat of arms of  Manuel Vieira Tosta, 1st baron, 1st viscount and 1st marquess of Muritiba. Also used by his son, 2nd baron of Muritiba, and by his brother, baron of Najé.
Archivo Nobiliarchico Brasileiro, of Rodolfo Smith de Vasconcelos and Jaime Smith de Vasconcelos (1918).
myself, based on symbol of XIX century.