if the mariage cert shows Phoebe as Ruths mother then a very strong chance...

It looks like Ruth is Sidney's Aunt..

1901 Mill Hiill , Bream
Richard Kear abt 1861 West Dean, Gloucestershire, England Head West Dean, Monmouthshire
Ruth Kear abt 1869 West Dean, Gloucestershire, England Sister West Dean, Monmouthshire
Jesse Kear abt 1880 West Dean, Gloucestershire, England Nephew West Dean, Monmouthshire
Thomas Kear abt 1883 Monmouthshire, Wales Nephew West Dean, Monmouthshire
Asker Kear abt 1889 West Dean, Gloucestershire, England Son West Dean, Monmouthshire
Sidney Kear abt 1895 West Dean, Gloucestershire, England Son West Dean, Monmouthshire

1891 Bream Eaves
Phoebe Kear abt 1825 West Dean, Gloucestershire, England Head West Dean, Gloucestershire
Richard Kear abt 1860 West Dean, Gloucestershire, England Son West Dean, Gloucestershire
Ruth Kear abt 1869 West Dean, Gloucestershire, England Daughter West Dean, Gloucestershire
Albert Kear abt 1867 West Dean, Gloucestershire, England Son West Dean, Gloucestershire
Jesse Kear abt 1880 West Dean, Gloucestershire, England Grandson West Dean, Gloucestershire
Oscar Kear abt 1889 West Dean, Gloucestershire, England Grandson West Dean, Gloucestershire
Thomas Kear abt 1883 West Dean, Gloucestershire, England Grandson West Dean, Gloucestershire

1881 Mill Hiill , Bream
Thomas Kear abt 1823 West Dean, Gloucestershire, England Head West Dean, Gloucestershire
Pheobe Kear abt 1826 West Dean, Gloucestershire, England Wife West Dean, Gloucestershire
John Kear abt 1863 West Dean, Gloucestershire, England Son West Dean, Gloucestershire
Mary Ann Kear abt 1858 West Dean, Gloucestershire, England Daughter West Dean, Gloucestershire
Richard Kear abt 1860 West Dean, Gloucestershire, England Son West Dean, Gloucestershire
Ruth Kear abt 1869 West Dean, Gloucestershire, England Daughter West Dean, Gloucestershire
Albert Kear abt 1865 West Dean, Gloucestershire, England Son West Dean, Gloucestershire
Jesse Kear abt 1880 West Dean, Gloucestershire, England Grandson West Dean, Gloucestershire

Thread http://www.forum.forest-of-dean.net/index.php?mode=thread8id=13072

Ruth Kear and her family are listed on the same page of 1881, 1891 and 1901 (including Sidney) censuses as Caleb Jenkins and or other members of his Family.

Does this also mean that Sidney was the illegitimate son of Ruth kear?
I have searched, but cannot find a Baptism Record for Sidney.

Any info much appreciated.

Name: Sidney Kear
Estimated Birth Year: abt 1895
Year of Registration: 1918
Quarter of Registration: Apr-May-Jun
Age at Death: 23
District: Plymouth
County: Devon
Volume: 5b
Page: 344

Year: 1918
Month: Apr
Day: 30
Surname: KEAR
Forenames: Sidney
Residence: Brockhollands
Age_at_death: 23
Officiating_Minister: GW Leonard Cass
Event: Burial
Cause_of_death:
Memoranda:
Notes:
Register_Reference: P57 IN 1/17
Page_No: 293
Parish_Chapel: Bream

Name: KEAR, SIDNEY
Initials: S
Nationality: United Kingdom
Rank: Gunner
Regiment/Service: Royal Garrison Artillery
Age: 23
Date of Death: 26/04/1918
Service No: 213007
Additional information: Son of Ruth Jenkins, Brook Hollands, Lydney, Glos.
N.B.: This casualty has recently been accepted for commemoration by the Commission. However, it will not be possible to add his name to this Memorial immediately. Please contact the Commission before planning a visit, for more information.
Casualty Type: Commonwealth War Dead
Memorial: BROOKWOOD (UNITED KINGDOM 1914-1918) MEMORIAL

Dear Sir

Sidney has recently been accepted by the Commonwealth War Graves Commission as a casualty of the Great War - however he is listed as having no known grave. He died in Plymouth, but I believe that his body was returned home at Lydney for burial. I wonder if you may have any details of his grave. My thanks

Chris Harley