In the January to March 1856 birth index Frederick Symondson, Pancras district, London, Middlesex, volume 1b page 99.

In the 1861 census living at 10 Wellington Road West, civil parish St Pancras, ecclesiastical parish Holy Trinity, Middlesex, Registration district Pancras, sub registration district Kentish town.
Frederick Symondson age 26, letter sorter G.P.O. born at St Pancras.
Wife Catherine age 26 born at St Pancras.
Son Frederic age 5, born at St Pancras.
Son Henry age 3, born at St Pancras.
Son Adolphus age 1, born at St Pancras.
Mother Teresa Symondson, widow, age 62, school mistress born at St Pancras.

In the 1871 census living at 18 Weedington Road, St Pancras civil parish, London, Pancras registration district, Kentish Town sub-registration district.
Frederick T. Symondson, age 35, sorter in General P.O., born St Pancras Middlesex.
Wife Catherine age 35, born Westminster, Middlesex.
Son Frederick age 15, Telegraph Messenger, born at St. Pancras, Middlesex.
Son Henry age 13, Telegraph Messenger, born at St. Pancras, Middlesex.
Son Adolphus age 11, born at St. Pancras, Middlesex.
Son Claude W. age 8, born at St. Pancras, Middlesex.
Son Alfred V. age 7 born at St. Pancras, Middlesex.
Son George L. age 2 born at St. Pancras, Middlesex.
Son newly born 2 days no name, born at St. Pancras, Middlesex.

Post Office Appointment Books
1872 H. S. Symondson nomination paper 123506, boy messenger, M.O.D. [Money Order Department], confirmation minute number 6975.

In the 1881 census living at 18 Weedington Road, St Pancras civil parish, London, Pancras registration district, Kentish Town sub registration district.
Frederick T. Symondson, age 46, professor of music, born Middlesex.
Wife Catherine Symondson age 46 born Middlesex.
Son Frederick J. Symondson, age 25, letter carrier. born Middlesex.
Son Adolphus Symondson, age 21 pianofort maker born Middlesex.
Son Claude W. Symondson, age 18, clerk born Middlesex.
Son Alfred V. Symondson, age 17, warehouseman born Middlesex.
Son George L. Symondson, age 12 born Middlesex.
Son Percy A. Symondson, age 10, born Middlesex.
Daughter Kate M. Symondson, age 7, born Middlesex.
Son Horace D. Symondson, age 4 born Middlesex.

In the 1891 census St Pancras parish at 4 Allcroft Road. Lodger Fred’k Symondson age 36, born at St Pancras clerk.

In the October to December 1895 marriage index, Frederic James Symondson, Pancras, London, Middlesex volume 1b page 323. Listed on the same page is Elizabeth Howe.

In the 1901 census living at No. 90 Allcroft Road, St Pancras civil parish, St Andrew ecclesiastical parish London, St Pancras District, Kentish Town sub district.
Frederick James Symondson, age 44?, married, warehouseman, born at St Pancras London.
Wife Elizabeth Symondson age 44, born at Camden Town, London.
Daughter Ethel Marcella, age 3 born at Camberwell, London.
Son Frederick Albert Age 2 born at Camberwell.
At this same address is a policeman and his family, also 4 boarders and 2 visitors. One visitor is Florence Howe, single, age 19, tailoress? [its difficult to decipher with all the marks added later], worker, born Kentish Town, London. [Florence would be daughter to Elizabeth.]

In the 1911 census 17 Milton Rd W, Hendon NW, Middlesex, Hendon parish.
Head Frederick Symondson, married, age 55, dock warehouseman, born St Pancras, London.
Daughter Ethel Symondson, age 13, school, born Nunhead, London.
Son, Frederick Albert Symondson, age 12, school, born Peckham, London.

A probable entry in the April to June 1934 death index Frederick J. Symondson, age 82 [If this is the correct person the age is incorrect.] Hendon, Middlesex, volume 3a, page 505.

From www.deceasedonline.com
Frederick James Symondson buried June 6, 1934 recorded at St. Pancras Cemetery (Camden).

In the 1861 census 3 ??? Terrace, Camden Town, Pancras.
Head Charles Baits, age 30, coal porter, born St. Pancras, Middlesex.
Wife Sarah Baits, age 27, born Limehouse, Middlesex.
Daughter Elizabeth Baits, age 4, born St. Pancras.
Daughter Emily Baits, age 3, born St. Pancras.

In the 1871 census 6 York Place, Camden Town, St. Pancras, London.
Head Charles Bates, age 43, coal porter, born Kentish Town.
Wife Sarah Bates, age 39, born Stepney.
Daughter Elizabeth Bates, age 15, born Camden Town.
Daughter Emily Bates, age 13, born Camden Town.

In the January to March 1875 marriage index Benjamin Laverick Howe and Elizabeth Bates are on the same page, Pancras district, London, volume 1b, page 133.

Parish records - Old St. Pancras, Middlesex - Marriage
January 24, 1875 Benjamin Laverick Howe, full age, bachelor, glass stainer, residence Ol St. Pancras, father John George Howe, glass stainer and
Elizabeth Bates, full age, spinster, residence Old St. Pancras, father Charles Bates, stone mason
in the presence of D. Long and L. Long
after Banns by W. K. Arrowsmith.

In the 1881 census 90 Great College Street, Camden Town, Pancras, London.
Head Benjamin Howe, age 27, painter, born Durham.
Wife Elizabeth Howe, age 25, born Pancras, Middlesex.
Daughter Jessie Howe, age 3, born Pancras.
Daughter Emily Howe, age 1, born Pancras.

In the 1891 census 14 Hanover Street, Kentish Town, St. Pancras, London.
Mother Elizabeth Howe, widow, age 34, charwoman, born Camden Town, London.
Daughter Jessie Louise Howe, age 13, scholar, born Camden.
Daughter Emily Sarah Howe, age 11, scholar, born Camden.
Daughter Florence Elizabeth Howe, age 9, scholar, born Camden.

Possible entry in the December 1924 death index
Elizabeth Symondson, age 68, Marylebone, London, volume 1a, paye 538.