b. 1799. d. 24 April 1870. Nationality: English. VIAF.
Poet, miniature painter, biographer, travel writer, novelist, translator. Born in
Middlesex. Frequently travelled from England to France and spent time in Paris in
her childhood. Worked as a copyist of illuminated manuscripts. Connected to London
literary society, and acquainted with Thomas Moore and Sir Walter Scott. Costello
never married. Poetry volumes include *Songs of a Stranger* (1825). Biographical information:
*ODNB*. (SP)