Capitain Sparrow from the Pirates of the Caribbean movies is not a fictitious family name. Here we see Hannah Sparrow who, according to her article in thepeerage, married Baronet Sir George Chetwynd in 1804.
Fram bbc.co that advises that this portrait is in one of the Staffordshire County Buildings.
Seasoned, middle-age Hannah Chetwynd wears a plain white dress (someone else is laundering it) with quarter length sleeves and a sweetheart neckline.
Keywords: Owen, Hannah Sparrow, Hannah Chetwynd, Sparrow family, Chetwynd family, British, curly coiffure, sweetheart neckline, quarter length close sleeves, waist band, bows, Empire waistline, close skirt, wrap