In the July to September 1909 birth index Hilda Keith, Hartlepool, Durham, volume 10a, page 179

In the 1911 Census 5 Town Wall, Hartlepool, Durham
Head Henry Blyth Keith, age 34, general labourer, marine engineering, worker, born Newcastle on Tyne, Northumberland
Wife Elizabeth Keith, age 37, married 14 years, 6 children born alive, born Walker on Tyne, Northumberland
Son Henry Fred Keith, age 13, school, born Hartlepool
Son Norman Keith, age 11, school, born Hartlepool
Son William Blyth Keith, age 8, school, born Hartlepool
Son Herbert Keith, age 6, school, born Wallsend on Tyne, Northumberland
Daughter Florence Annie Keith, age 3, born Hartlepool
Daughter Hilda Keith, age 1, born Hartlepool

In the 1921 census Willington Nurseries, Churchill Street, Wallsend, Northumberland
Head Henry Blythe Keith, age 44 years 0 months, born Newcastle, Northumberland, Engineers Slinger Marine Engines -Wallsend Slipway Engineering Co. Ltd, Wallsend on Tyne
Wife Elizabeth Keith, age 47 years 8 months, born Walker, Northumberland, at home
Son William B. Keith, age 19 years 2 months, single, born Hartlepool, Durham, apprentice engineer - Walsend Slipway Engineering Co. Ltd.
Son Herbert Keith, age 16 years 10 months, single, born Wallsend, Northumberland, assistant grocer - Walter Wilson Ltd., 26 Potters Street, Wilson Quay
Daughter Florence A. Keith, age 13 years 7 months, born Hartlepool, whole time at school
Daughter Hilda Keith, age 11 years 8 months, born hartlepool, whole time at school
Daughter Elizabeth Keith, age 6 years 8 months, born Newcastle, Northumberland, whole time at school