A portrait of Manuela de Errazu, the sister of Ramón de Errazu (1841-1904), who was an important Mexican art collector living in Paris.

This is one of Madrazo's most exquisite images. With special mastery he applies both his drawing skills —capturing the sitter's details— and his capacity for the freest and most rapid execution, visible in the carpet and background curtains. Of particular interest is the volume Madrazo manages to give the figure by using careful brushstrokes that accentuate her dimensions, including, for example, her fingernails or the highlights on the satin parts of her dress.

This work was bequeathed to the Prado Museum by the sitter's son, Joaquín Irureta-Goyena, in 1953.