Muriel G. O. Symondson birth listed in the October to December 1901 birth index St George Hanover Square, London Middlesex volume 1a, page 419

In the 1911 census at 104 Coleshill Bdgs, Pimlico Road, London. Alfred Symondson, head, age 43, married, Musician H. M. Scots Guards, born Hounslow, Middlesex. Wife Alice Symondson, age 36, married 17 years, 6 children born alive, all living, born Dartsmouth, Devon. Son Alfred Symondson, age 16, single, Musician H. M. Scots Guards, born London, Middlesex. Son Sidney Symondson, age 14, Musical student, born London, Middlesex. Daughter Muriel Symondson, age 9, born London. Daughter Sybil Symondson, age 3, born London. Daughter Violet Symondson, age 2, born London. Son Algarides? Symondson, age 1 born London. They are living in a 3 room tenement.

In the London Electoral Registers 1964 and 1965
15 Charlotte Road, Wallington, Mitcham, Surrey
Ann R. Nash [granddaughter]
Violet M. J. Nash [daughter]
Alice M. Symondson [mother]
Muriel Grace O. Symondson [daughter]
In the 1964 entry only Charles W. Nash [son in law]

Muriel Grace O. Symondson listed in the Aug 1990 death index age 88, Chichester district, Sussex volume 18 page 1252, born Sep 3. 1901.