From eBay. This is one of several prints of beauties in Queen Victoria's court released in 1849. The original was prepared about a decade earlier based on her dress.
This is her brief article from thepeerage, "Lady Adelaide Charlotte King F, #117514, d. August 1854 Last Edited=27 Apr 2011 Consanguinity Index=0.04%
Lady Adelaide Charlotte King was the daughter of George King, 3rd Earl of Kingston and Lady Helena Moore. She married Charles Tankerville Webber in 1834. She died in August 1854.
From 1834, her married name became Webber."