In the 1891 census 119 Carlton Road, St. Pancras civil parish, St. Martin ecclesiastical parish, Kentish Town, London.
Adolphus D. Symondson, Head, single, age 31, Pianofort Tuner, born Pancras.
Jane A. Carroll, border, single, age 27, born Pancras.
Nellie Ayres, boarder, age 1, born Pancras.

London School Admissions for Infants Duncombe Road School, Islington
April 22, 1895 Dorothy Symondson, parents Danby, 196 St. John’s Road, born September 29, 1889

London School Admissions Cottenham Road School, Islington
October 17, 1898 Dolly Symondson, parent Adolphus Symondson, 95 Cornwallis Road, born September 29, 1889, former school Harsrabe? Pk B, left September 25, 1903

In the 1901 census 95 Cornwallis, Upper Holloway, islington, 2 rooms occupied.
Adolphus Danby Symondson, age 41, pianoforte tuner, born Kentish Town.
Wife Jane Agnes Symondson, age 37, born Kentish Town.
Adopted Child Dorothy Ellen Ayres, age 11, born St. Pancras, Middlesex.
Visitor, Victor Pickering, age 5 months, born St. Pancras. [I wonder if Jane Agnes Carroll took in orphan babies and ended up adopting Dorothy?]