Little is known about R.W.King. He is only known from a silhouette of the Rev.Clement Chevallier, displayed in the Castle Museum in Norwich. It is painted on paper, and detail is highlighted using Gum Arabic and Chinese White. It is thought to date between 1810-1820.
Source: McKechnie (Author of, British Silhouette Artists and their Work 1760-1860)
King, R. W. (McKechnie Section 2)