Coat of arms of Manuel Antonio da Fonseca Costa, baron, viscount and marquess of Gávea (the same arms of the Portuguese blasons of the Fonseca and Costa families). Also used by his son, the viscount of Penha, and his niece, the viscountness of Fonseca Costa.
Archivo Nobiliarchico Brasileiro, of Rodolfo Smith de Vasconcelos and Jaime Smith de Vasconcelos (1918).
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