He was the s/o Hanson Harrison and Elizabeth McCallin. They don't appear to have had children.
Steve
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John E F Harrison, "United States Census, 1920"
Name: John E F Harrison
Titles and Terms:
Event Type: Census
Event Year: 1920
Event Place: Portsmouth Ward 3, Rockingham, New Hampshire, United States
District: 146
Gender: Male
Age:
35
Marital Status: Single
Race: White
Race (Original): White
Can Read: Yes
Can Write: Yes
Relationship to Head of Household: Head
Relationship to Head of Household (Original): Head
Own or Rent: Own
Birth Year (Estimated): 1885 [Oct. 1884]
Birthplace: Nova Scotia [Maccan]
Immigration Year: 1892
Father's Birthplace: Nova Scotia
Mother's Birthplace: Nova Scotia
Sheet Number and Letter: 13A
Household ID: 272
Line Number: 45
Affiliate Name: The U.S. National Archives and Records Administration (NARA)
Affiliate Publication Number: T625
GS Film number: 1821014
Digital Folder Number: 004313307
Image Number: 00343
Household Gender Age Birthplace
Head
John E F Harrison M 35 Nova Scotia
Mother
Elizabeth Harrison F 72 Nova Scotia [widowed]
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Ford J Harrison, "United States Census, 1930"
Name: Ford J Harrison
Titles and Terms:
Event Type: Census
Event Year: 1930
Event
Place: Portsmouth, Rockingham, New Hampshire, United States
District: 0039
Gender: Male
Age: 45
Marital Status: Married
Race: White
Race (Original): White
Relationship to Head of Household: Head
Relationship to Head of Household (Original): Head
Birth Year (Estimated): 1885
Birthplace: Canada
Immigration Year: 1895
Father's Birthplace: Canada
Mother's Birthplace: Canada
Sheet Number and Letter: 14B
Household ID: 317
Line Number: 87
Affiliate Name: The U.S. National Archives and Records Administration (NARA)
Affiliate Publication Number: T626
Affiliate Film Number: 1305
GS Film number: 2341040
Digital Folder Number: 004610737
Image Number: 00967
Household Gender Age Birthplace
Head
Ford J Harrison M 45 Canada
Wife
Nellie Harrison F 48 New Hampshire
Mother
Elizabeth L Harrison F 82 Canada