Baron of Alcantarilha was a noble title instituted by His Majesty King LuÃÂs I of Portugal, by decree dated 17 June 1869, in favour of Sebastião José de Mendonça.
Use of the coat of arms granted in Brazil to his brother, the Baron of Jaraguá, by Royal Charter dated 22 August 1861.
The coat of arms is described as follows:<blockquote> A quartered shield: in the first quarter, the arms of the Mendonça family, which are: a French-style shieldâÂÂfirst, on a green field, a red bend cotised in gold; second, a black letter "S" on a gold field, and vice versa in the opposite quarters; in the second quarter, the arms of the Vieira familyâÂÂon a red field, six gold scallop shells arranged in two vertical rows (pales); in the third quarter, the arms of the Mattos familyâÂÂon a red field, a green pine tree bearing fruit, with gold outlines and roots, between two gold lions, armed in blue; in the fourth quarter, the arms of the Moreira familyâÂÂon a red field, nine silver escutcheons, each bearing a green flory cross like those of the Order of Aviz, arranged in three pales.
Crest â a golden wing bearing a black letter "S" as in the shield, with a silver label charged with a black "S" as a mark of cadency. </blockquote>