In the April to June 1893 birth index Dora Gwendoline Read, Buckingham, Oxfordshire, volume 3a, page 802.

In the 1901 census Lower Street, Tingewick, Buckinghamshire.
Head Thomas S. Read, age 37, butcher and grocer, own account, born Tingewick, Buckinghamshire.
Wife Louisa Read, age 34, born Finmere, Oxfordshire.
Daughter Dora G. Read , age 8, born Tingewick.
Daughter Frances L. Read, age 3, born Tingewick.
Niece Eliza Davis, age 17, born Dindleton, Lancashire.

In the 1911 census Black Bourton, Claufield?, S.O., Oxfordshire. Boarder Dora Read, age 18, single, born Tingewick, Buckinghamshire. She is staying with the Thomas White Jefferys? family.

From the book Laughter in the Air by Georgina Morgan (nee Symondson) Gwen (as she was known) was so devastated and bitter about the loss of her son she worked in a factory for the rest of the war making ammunition.

In the January to March 1975 death index Dora Gwendoline Symondson, born February 25, 1893, registration district Crosby, Merseyside, volume 37, page 0363.

Henry Norman Symondson listed in the January to March 1890 birth index, Brentford district, Middlesex, volume 3a page 59

Parish records Holy Trinity Hounslow, Henry Norman Symondson baptized 12 December 1890, parents Sidney Frederick and Wilhelmina Symondson, abode Grove Road, father’s occupation Clerk.

In the 1891 census
Sidney F. Simmonds age 28 born Hounslow, occupation clerk.
Wife Wilhelmia age 28 born London, Middlesex.
Children Gertrude E. age 5,
Sydney C. age 4
Wilhelmina age 2,
Henry N. age 1
all born at Hounslow.
Brother in law Alerts? W. Arnold age 18, born at Hounslow Stonemasons apprentice.
Living at 1 Rose Villa, Hounslow, Isleworth Parish, Heston and Isleworth Sanitation district.

In the 1901 census living at 58 Warleigh Road Civil Parish Preston, Ecclesiastical parish of St Saviour, Brighton Sussex. Registration District Steyning, Sub registration district Shoreham.
Sydney F. Symondson age 38, born at Hounslow, Middlesex occupation coal merchant (employer).
Wife Wilhelmina age 36, born at Bedford Square, London.
Daughter Gertrude age 15, born at Hounslow, Middlesex,
son Sidney age 13, born at Hounslow,
daughter Wilhelmina age 12 born at Hounslow,
son Henry age 11 born at Hounslow,
daughter Barbara age 9 born at Hounslow,
son Robert age 7 born at Hounslow,
son Victor age 4 born at Hounslow,
son Lionel age 2 born at Brighton, Sussex.
They have 1 domestic servant.
Visiting with them are his father Henry Symondson,
mother Barbara Symondson,
his brother Herbert and his family.

Listed in the Varndean Boys School, Brighton, year of 1901 in Brighton see
https://www.oldvarndeanians.org.uk/vboys/yearlists/y1901.shtml
Henry N. Symondson

Parish Records St. Mary Willesden, Middlesex
November 11, 1916
Henry Norman Symondson, 26, Bachelor, clerk, 51 Woodheyes? Road, father Sydney Frederick Symondson, retired Coal merchant
Gwendoline Dora Read [not the reversal of her first and middle names], 26, Spinster, 57 Woodheyes Road, father Thomas Stockley Read, Grocer
In the presence of S. F. Symondson and F. L. Read

1939 England and Wales Register
150 Christchurch Avenue, Kenton, Harrow, Middlesex
1. Henry N. Symondson, born January 22 1890, married, manager towel supply company
2. Dora G. Symondson, born February 25 1893, married, unpaid domestic duties
3. Douglas V. Symondson, born Janaury 14 1917, single, assistant storekeeper electrical equipment
4. Record Officially closed [Possibly Sydney Norman Symondson]

London Electoral Registers 1946
150 Christchurch Avenue, Harrow
Dora G. Symondson
Henry N. Symondson
Douglas V. Symondson
Elizabeth Mary D. Symondson

In the January to March 1961 death index, Henry N. Symondson, age 70, Liverpool North, Lancashire, volume 10d, page 321.