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Wondering if this is Columb's parents?:

1901
Residents of a house 31.2 in Straid (Straid, Donegal)
Doherty Daniel 33 Male Head of Family RC Co Donegal Physician and Surgeon
Doherty Helen Marie 25 Female Wife Roman Catholic Scotland
Doherty Cecil O 2 Male Son Roman Catholic Scotland
Doherty Kathleen O Female Daughter Roman Catholic Scotland
Murray Teresa 18 Female Servant Roman Catholic Co Galway

And his birth in Donegal:
Ireland, Civil Registration Births Index, 1864-1958
Name: Columb Christopher B Doherty
Date of Registration: Apr-May-Jun 1913
Registration district: Inishowen
Volume: 2
Page: 115
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Civil Birth Record
Name: Columbo Christopher Bened Doherty
Date of Birth: 20-Jun-1913
Address: Clonmany
Parish/District: CLONMANY
Father: Daniel Doherty (Medical Practitioner)
Mother: Helen Mavis O Doherty
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A sibling:
Civil Birth Record:
Margarete Carmela Letitna Doherty
Date of Birth: 15-Feb-1915
Address: Clonmany
Parish/District: CLONMANY
Father: Daniel Doherty (Medical Practitioner)
Mother: Helen Marie O Doherty

There is a marriage on Scotlandspeople that would fit 1940 Glasgow- between Columb and Agnes

I believe this could be his death:
First name(s) COLUMB CHRISTOPHER B
Last name DOHERTY
Gender Male
Birth day 20
Birth month 6
Birth year 1913
Death quarter 1
Death year 1991
District MANCHESTER
Register number 291
County Lancashire
Volume 38
Page 1252
Country England

You can check trees on here by going to search at top of page Amba,

The births of children are easily found on freebmd, as most have middle initials it should be fairly easy to look for any marriages for them, one of the birth certs will give you first names of parents.

If they married in Scotland you will need to look at Scotland' s People site.

Doherty (m. born about 1913, Irish?) Oakes (wife, Scottish?) and eight children born between 1941 and 1955 in Manchester area - names for children (living, I think?) are Brian, Sheelagh, Paul, Peter, Gretchen (could go by another name), Marie, Noeleen, and elder boy unknown - cannot find a record of fathers first name or marriage - he must be well passed by now - I can say he was a GP in the Manchester area however. Any connections at all to this branch of Doherty's much appreciated!!

Especially more information on the Doherty-Oakes marriage as its difficult to go any further back! Or forward, for that matter, as it is when relatives are living...
Kindest thanks,
Amba