Was the architect of the Metropolitan Drinking Fountain and Cattle Trough Association. He designed two magnificent Maharajah fountains in London parks: For Readymoney and for the Maharajah of Vijianagram.
From University of York: "1837-1914, Robert Keirle was born in Exeter, Devon, in 1837, the son of James Sylvanus Keirle, a coach-guard, and his wife Mary Anne. He died in Kensington on 26 May 1914."
Information also available at the Cambridge University Heraldic & Genealogical Society
Here's a drawing of 'Cadogan Terrace, 1879', one of those large red brick blocks in the Cadogan estate, designed by Keirle, but we can't identify it.