ATTRIBUTABLE TO RICHARD WESTMACOTT THE YOUNGER (1799-1872), MID-19TH CENTURY

Although only signed with a monogram, the style is similar to other works of Westmacott, as is the style of the signature. 
There is a resemblance to the portrait of Bronte in the N.P.G. (c.1833, NPG 1724), namely the long nose and the centrally-parted shoulder length hair.  However mid-Victorian portrait sculpture tended to present an idealised version of the sitter, occasionally to the detriment of likeness and furthermore Westmacott is not recorded as executing a bust of Bronte.