Martin was the nephew of Paul and Dominic Colnaghi, the famous English art dealers. Martin Colnaghi's firm, the Guardi Gallery, moved to 11 Haymarket [London] in 1876.
Bibliography
1973
Fahy, Everett, and Francis John Bagott Watson. The Wrightsman Collection. Vol. 5: Paintings, drawings, sculpture. New York, 1973.