Name of “Nellie” from Vivienne Margaret McGonagle in a telephone conversation with Brian of nzolivers on 22 February 2019. Vivienne is the daughter of Nellie’s sister, Elsie Roma Collett. b1910.

Formal name of “Mary H Macdonald“, year of birth (circa 1883), born Leeds, West Yorkshire, England, from 1891 England Census for Yorkshire/Armley/District 33
Household Members:
Name and Age
John Macdonald 34 [Father]
Mary A Macdonald 29 [Mother]
Mary H Macdonald 8 Scholar, Born Yorks Leeds
Margaret H Macdonald 5 Born Yorks Leeds [Sister]
Laura Macdonald 4 Born Yorks Leeds [Sister]
Elsie Macdonald 1 Born Yorks Leeds [Sister]

Brian of nzolivers surmises that maybe the second initial of “H” is for “Helen” with Nellie or Ellen being a common nickname?

Year and place of marriage, from England & Wales, Civil Registration Marriage Index, 1837-1915
Name: Thomas Flint
Spouse Surname: Macdonald
Registration Year: 1913
Registration Quarter: Apr-May-Jun
Registration district: Holbeck
Inferred County: Yorkshire West Riding
Volume: 9b
Page: 1015

Date of birth, second given name as “Ellen”:
1939 England and Wales Register, Yorkshire (West Riding) / Huddersfield CB / KFEG
Name: Thomas Flint [Husband]
Gender: Male
Marital Status: Married
Birth Date: 27 Mar 1879
Residence Year: 1939
Address: 20 Greenhead Lane
Residence Place: Huddersfield Yorkshire (West Riding) England
Occupation: Commercial Transport Coop
Schedule Number: 100
Sub Schedule Number: 1
Enumeration District: KFEG
Registration district: 495/6
Inferred Spouse: Mary Ellen Flint
Household Members:
Name and Age
Thomas Flint 60 married
Mary Ellen Flint: age 56, Born 22 March 1883 / married / Occupation: Unpaid domestic duties