Ada Annie Govier, a girl from Lyme Regis on the south coast of England, was christened on 21 October 1885. Her mother was Martha Ann and her father, Samuel Edward Govier (1857-1934). She married Albert George Case (1884-1976).
Govier posed for Devonshire Daisy y446 in Lyme Regis. Her father also posed for Whistler.
Parish Registers, Dorset, England, 1538-1936, website.
Young, Andrew McLaren, Margaret F. MacDonald, Robin Spencer, and Hamish Miles, The Paintings of James McNeill Whistler, New Haven and London, 1980 (cat. no. 446).