In the the July to September 1909 birth index Eric Arthur R. Symondson, Kingston, Surrey, volume 2a, page 455

Parish Records Christ Church, New Malden and Coombe, Surrey
Baptism September 5, 1909 Eric Arthur Raymond Symondson, parents Percy Claud Symondson and Florence Emily Symondson, abode 4 Melrose Terrace, father is a Solicitor’s Clerk.

In the 1911 census 8 Albany Rd New Malden, Kingston, Surrey.
Head Percy Claude Symondson, married, age 29, Law Clerk, born Hounslow, Middlesex.
Wife Florence Emily Symondson, married 5 years, age 28, born at Tooting, London.
Son Cyril Claude Henry Symondson, age 4, born Tooting.
Daughter Vera Florence Ena, age 3 born Tooting.
Son Eric Arthur Raymond Symondson, age 1, born New Malden, Surrey.

In the 1921 census 26 Daphne Street, Springfield, Wandsworth, London, Surrey
Head Percy Claude Symondson, age 39 years 6 months, married, born Hounslow, Middlesex, gas supply clerk - Wandsworth Wimbledon Epsom District Gas Company Fairfield Street Wandsworth SW1
Wife Florence Emily Symondson, age 36 years 6 months, born Brixton, London, home duties
Son Cyril Claude Symondson, age 14 years 5 months, born Tooting, London, at school whole time
Daughter Vera Florence Symondson, age 13 years 3 months. Born Tooting, London, at school whole time
Son Eric Arthur Symondson, age 11 years 11 months, born New Malden, Surrey, at school whole time
Daughter Irene Barbara Symondson, age 9 years 7 months, born New Malden Surrey, at school whole time
Daughter Sylvia Winifred Symondson, age 7 years 10 months, born New Malden, Surrey, at school whole time
Daughter Phyllis Symondson, age 4 years 9 months, born Wandsworth, London, at school whole time

Parish Records, St Anne, Wandworth
Eric Arthur Raymond Symondson, 20 Rosehill Road, buried January 21, 1927, age 17

In the January to March 1927 death index Eric A. R. Symondson, age 17, Wandsworth, Greater London, volume 1d, page 590.