It’s not clear if you already know this but from Glos BMD there might be an extra sibling:-

Child Surname Child Forename Father Surname Mother Surname Mother's Former Name Year District Office Register Entry
YEMM Albina Frances Ethel YEMM YEMM MILES 1923 Forest of Dean Westbury on Severn, East Dean 30 35
YEMM Peggy Mary YEMM YEMM MILES 1920 Forest of Dean Westbury on Severn, East Dean 27 151
YEMM Robert YEMM YEMM MILES 1929 Forest of Dean Westbury on Severn, East Dean 34 198
YEMM Tom YEMM YEMM MILES 1916 Forest of Dean Westbury on Severn, East Dean 24 33

From GR it looks like Douglas RIPPIN may have had a further marriage between Albina and Ethel:-

First Name DOUGLAS H
Last Name RIPPIN
Gender Male
Year 1942
Spouse YEMM
Image Quarter 3
Country England
County Gloucestershire
District FOREST OF DEAN
District Number
Registry Number
Volume 6A
Page 898
Line Number 59
Entry Number

Spouse Match: Douglas H RIPPIN married Albina F E YEMM
First Name ALBINA F E
Last Name YEMM
Gender Female
Year 1942
Spouse RIPPIN
Image Quarter 3
Country England
County Gloucestershire
District FOREST OF DEAN
District Number
Registry Number
Volume 6A
Page 898
Line Number 15
Entry Number

First Name DOUGLAS H
Last Name RIPPIN
Gender Male
Year 1947
Spouse GOODALL
Image Quarter 3
Country England
County Essex
District CHELMSFORD
District Number
Registry Number
Volume 4A
Page 1352
Line Number 109
Entry Number

Spouse Match: Douglas H RIPPIN married Dorothy G GOODALL
First Name DOROTHY G
Last Name GOODALL
Gender Female
Year 1947
Spouse RIPPIN
Image Quarter 3
Country England
County Essex
District CHELMSFORD
District Number
Registry Number
Volume 4A
Page 1352
Line Number 14
Entry Number

First Name DOUGLAS H
Last Name RIPPIN
Gender Male
Year 1954
Spouse SARGEANT
Image Quarter 2
Country England
County London
District POPLAR
District Number
Registry Number
Volume 5D
Page 530
Line Number 108
Entry Number

Spouse Match: Douglas H RIPPIN married Ethel M SARGEANT
First Name ETHEL M
Last Name SARGEANT
Gender Female
Year 1954
Spouse RIPPON
Image Quarter 2
Country England
County London
District POPLAR
District Number
Registry Number
Volume 5D
Page 530
Line Number 115
Entry Number

Ethel seems to have been a “SEARGENT” because of this:-

ETHEL M
Last Name COLBEAR
Gender Female
Year 1932
Spouse SARGEANT
Image Quarter 1
Country England
County Essex
District MALDON
District Number
Registry Number
Volume 4A
Page 1230
Line Number 64
Entry Number

Spouse Match: Ethel M COLBEAR married Henry F SARGEANT
First Name HENRY F
Last Name SARGEANT
Gender Male
Year 1932
Spouse COLBEAR
Image Quarter 1
Country England
County Essex
District MALDON
District Number
Registry Number
Volume 4A
Page 1230
Line Number 90
Entry Number

Were there any specific questions you had about the earlier YEMMS?

Thanks for all the info.Never realised Grandad had been married three times
Regards
Darren

Hi Darren, just to let you know I have some Yemm family members in my tree. Thomas Yemm 1864-1920 married my 3rd cousin x 3 removed, Mary Malson, on 29/03/1891 at Lybrook. As far as I know they had children, Mary b 1892, Emily b 1898 and William b 1900 all in the Abersychan area of Monmouthshire.

Hope this helps.

Regards, David