The arms are those of Don Luís Peregrino de Ataíde, 10th Count of Atouguia, of the Council of King João V, Governor and Captain-General of the Algarve, 6th Viceroy of Brazil from 1749-1755. He was born in 1700, married Dona Clara Assis Mascarenhas, daughter of the 2nd Count of Óbidos, in 1720 and died in 1758.
There are at least seven known services made around 1720 bearing these arms and crest, all variously decorated but in similar Imari/famille verte palettes. See N. de Castro, Chinese Porcelain and the Heraldry of the Empire, Oporto, 1988, pp.53-61, where all the services for this family are illustrated. This dish is from the fourth service, illustrated ibid. p.56.