In the July to September 1861 birth index Mary Ann Oughton, Pancras, London, Middlesex, volume 1b, page 6.

Parish records Holy Trinity Marylebone Road
Baptism August 18, 1861 Mary Ann Oughton, parents William and Emma Oughton, 45 Everett Street, father’s occupation carpenter, she was born June 12 1861.

In the 1881 census 9 Williamson Street, Islington, London.
Head William Oughton, age 42, organ builder, born Marylebone, Middlesex.
Wife Emma Oughton, age 41, born St. Pancras, Middlesex.
Daughter Mary A. Oughton, unmarried, age 19, dressmaker, born St. Pancras.
Daughter Katherine Oughton, unmarried, age 18, dressmaker, born St. Pancras.
Son Bartlett Oughton, age 16, organ builder, born St. Pancras.
Son Henry Oughton, age 10, born St. Pancras.
Daughter Hannah Oughton, age 8, born St. Pancras.
Son Francis Oughton, age 4, born Islington, Middlesex.

In the 1901 census
William Oughton, head married, age 62, Organ Builder, born Marylebone, London.
Wife Emma Oughton, age 62, born St. Pancras, London.
Daughter Mary A. Symondson, married age 39, dressmaker, on her own account, born St Pancras.
Grandson Albert H. Symondson, age 14, Office boy, born Islington.
Grandson Percy Symondson age 3, born Islington.

In the 1911 census 87 Tabley Road, Islington, London, Tufnell subdistrict.
William Oughton, head, widower, age 72, organ builder, born St Marylebone, London.
Daughter Mary Ann Symondson, married 29 years, age 49, dressmaker, born St Pancras, London.
Grandson Albert Henry Symondson, single, age 24, organ builder, born Islington, London.
Grandson Percy Symondson, age 13, school, born Islington.
Boarder George Ernest Wood, single, age 25.

In the April to June 1920 death index, Mary A. Symondson, Barnet district, Middlesex, age 59, volume 3a, page 379.

From www.deceasedonline.com
Mary Ann Symondson buried May 6, 1920 recorded at Islington Cemetery (Islington)

In the April to June 1862 birth index Claude William Symondson, Pancras District, London, Middlesex, volume 1b page 166.

In the 1871 census living at 18 Wellington Road, St Pancras civil parish, London, Pancras registration district, Kentish Town subregistration 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.

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 1881 October to December marriage index Claud William Symondson, Shoreditch, London, Middlesex volume 1c page 197. The only other name on the page is Mary Ann Oughton.

parish records St James Church, Shoreditch
December 30, 1881
Claud William Symondson, full age, bachelor, clerk, 16 Rushton St, father Frederick Thomas Symondson, Professor of Music
Mary Ann Oughton, full age, Spinster, 21 Rushton St., father William Oughton, organ builder
In the presence of Henry Whitehead and L Browne
[He signs his name Claude and she Maryann]

In the 1891 census 8? Barbara Streeet, Islington, London
Head Claude W. Symondson, age 28, barrister’s clerk, employed, born Kentish Town, London
Wife Mary A. Symondson, age 29, born St. Pancras, London
Son Claude F. Symondson, age 8, scholar, born Islington, London
Son Albert H. Symondson, age 4, born Islington
Brother Percy A. Symondson, solicitor’s clerk, age 20, born Kentish Town.

In the 1901 census at 23 St Pauls Cres. St Pancras civil parish, St Thomas ecclesiastical parish, London, St Pancras district, Camden Town sub district.
Claude W. Symondson, married age 39, Labourer London Docks, born at London St Pancras.
Sister Kate Symondson, single age 27, teller Indian Stamp? Dept., born at St Pancras.

In the 1911 census at his sister Kate and brother in law Ernest Hudson.
Claude William Symondson, age 48 married, General Dock Worker London Port Authority, born Kentish Town, Middlesex.

In the Boston Passenger lists, Claude W. Symondson, Nursery Man, age 40 years [should be 50] arrived March 25, 1912 Boston, Massachusetts, on board the Ivernia, departed Liverpool, last permanent address London,
wife Mary Ann Symondson 287 Gladstone Ave Wood Setton?, destination Welland, Ont. [This line as with several other is crossed out. I’m not sure if this means if he disembarked before arriving in Boston or if he never sailed.]

A possible entry in the UK incoming Passenger Lists
Arrived July 31, 1915, Liverpool, England on the Ordune, Charles Claude [or possibly Charles or Claude] Symondson, Rowloon House, Kings Cross, London, age 53, last residence Canada, deported. [There were at least 10 others on this ship who were deported.]

In the April to June 1931 death index Claude W. Symondson, age 69, St. Albans district, Hertfordshire, volume 3a, page 894.

From www.deceasedonline.com
Claude Wm. Symondson, buried on June 12, 1931 recorded at St Pancras Cemetery (Camden)