There's a 1915 birth reg for a Charles Frederick Casey in Norwich. MMN = Dakin
He's in the 1921 census with widowed mum and younger sister in Ipswich.
1914 marriage for a Dorothy Ann Dakin to Sydney H Casey in Essex.
1921 census has Dorothy's birthplace as Doncaster.
1890 baptism to parents Frederick William and Ellen Louisa Dakin in Doncaster.
1884 birth for a Sydney Henry Casey in Suffolk. MMN = Clarke
He was with the Royal Garrison Artillery and died in 1918 in France.
Enlistment place: Shoreditch, Middlesex.
Son of Charles Casey, of Parkeston, Harwich; husband of Dorothy A. Casey, of 45, Springfield Lane, Norwich Rd., Ipswich. He enlisted on the 29th May 1917. He died of influenza.
He joined the GER in April 1899. Restaurant car attendant, Hotels Department.