In the 1891 census 170 Lupus Street, Belgrave, St. George Hanover Square, London. Head James Duthoit, age 31, musician in Coldstream Guards Band, born St. Pancras, London. Wife Rhoda Duthoit, age 27, born Chelsea, London. Daughter Rhoda E? E Duthoit, age 6, born St. George Hanover Square, London. Son William J. Duthoit, age 5, born St. George Hanover Square, London. Daughter Ethel May Duthoit, age 4, born St. George Hanover Square. Daughter Gertrude Amy Duthoit, age 2, born St. George Hanover Square.

In the 1901 census 54 Sussex Street, St. George Hanover Square, Belgrave, London. Head James Duthoit, age 41, musician Guards, born St. Pancras, London. Wife Rhoda Duthoit, age 38, born Chelsea, London, Daughter Rhoda E. Duthoit, age 16, Incandescent Light Co. mantle maker, born St. George Hanover Square. Son William J. Duthoit, age 15, press cutting agency, born St. George Hanover Square. Daughter Ethel M. Duthoit, age 14, press cutting agency, born St. George Hanover Square. Daughter Gertrude A. Duthoit, age 12, born St. George Hanover Square. Daughter Ellen M. Duthoit, age 8, born St. George Hanover Square. Son Reginald C? Duthoit, age 6, born St. George Hanover Square.