JM
James Mcdonald — 1940 US Census Record
Model Tree available1940 United States Federal Census · Merrimack-County, New Hampshire
Our Model Tree links this James Mcdonald across the 1900, 1910, 1920, 1930 and 1940 US Censuses in Merrimack-County, New Hampshire (XGBoost, ~Confirmed), with identified parents Charles & Margaret — first a head (b.~1896), then head of a 4-person household.
Age 44
b. ~1896
Male
Head
Born: New Hampshire
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Merrimack-County, New Hampshire |
| Surname | McDONALD |
| Given Name | JAMES F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| 1935 Residence (City) | Concord city |
| 1935 Residence (County) | Merrimack |
| Additional Details | |
| Occupation | caretaker |
| Industry | national guard garage |
| Class of Worker | GW |
| Hours Worked | 32 |
| Income (1939) | 1350 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
| Occupation | Caretaker |
| Township / Ward | Concord City |
| Est. Birth Year | ~1896 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| M Mcdonald | Daughter | — | 3 | ~1937 |
| James Mcdonald | Head | — | 44 | ~1896 |
| James Mcdonald | Son | — | 7 | ~1933 |
| Adah Mcdonald | Spouse | — | 26 | ~1914 |
Census Appearances
Son, age 5
Merrimack, New Hampshire · implied b. ~1895 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Macdonald |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Birth Month | July |
| Birth Year | 1895 |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | New Hampshire |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1910
Merrimack, New …
Son, age 14
Merrimack, New Hampshire · implied b. ~1896 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | James F |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | New Hampshire |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1920
Merrimack, New …
Son, age 25
Merrimack, New Hampshire · implied b. ~1895 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | James F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | New Hampshire |
| Occupation | Salesman |
| Industry | Dry Goods Store |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1930
Merrimack, New …
Son, age 35
Merrimack, New Hampshire · implied b. ~1895 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDonald |
| Given Name | James F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | New Hampshire |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | New Hampshire |
| Occupation | Mechanic |
| Industry | Garage |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
1940
Merrimack-County, New …
Head, age 44
Merrimack-County, New Hampshire · implied b. ~1896 — 4 household members
| Surname | McDONALD |
| Given Name | JAMES F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | New Hampshire |
| 1935 Residence (City) | Concord city |
| 1935 Residence (County) | Merrimack |
| Occupation | caretaker |
| Industry | national guard garage |
| Class of Worker | GW |
| Hours Worked | 32 |
| Income (1939) | 1350 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | New Hampshire |
| Birth Country | United States |
| Birthplace (normalized) | new hampshire |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links James Mcdonald across 5 US Census years (1900, 1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Mcdonald (~0.92 confidence) and mother Margaret Mcdonald (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Mcdonald
b. ~1861
Source father
● Household
· direct · ~0.92
Mother
Margaret Mcdonald
b. ~1865
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Mcdonald
Head · 1940 · age 44 · b. ~1896 · New Hampshire
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Merrimack-County, New Hampshire
Open full size
1940 US Federal Census — Merrimack-County, New Hampshire
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02293-00675)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William H. Welch | 65 | Head | Janitor | New Hampshire |
| 2 | Honora X. Welch | 69 | Wife | — | New Hampshire |
| 3 | Dorothea F. Welch | 28 | Daughter | Tabulator | New Hampshire |
| 4 | Granville O. Swain | 45 | Son-in-law | Attendant | New Hampshire |
| 5 | U. Jeannette Swain | 44 | Daughter | — | New Hampshire |
| 6 | Ann C. Swain | 8 | Grand-daughter | — | New Hampshire |
| 7 | James J. Lane | 72 | Head | — | Eire |
| 8 | Mary T. Lane | 65 | Wife | Landlady | Eire |
| 9 | William H. Lane | 69 | Brother | — | Eire |
| 10 | Kemp H. Burnett | 28 | Lodger | Dairyman | New Hampshire |
| 11 | Donald C. Stahlman | 23 | Lodger | Driller | Pennsylvania |
| 12 | Thomas T. Gallagher | 30 | Lodger | Driller | New Hampshire |
| 13 | Frederick Blanchard | 24 | Lodger | Blacksmith | Massachusetts |
| 14 | Wilfred Lizotte | 38 | Lodger | Auto Mechanic | New Hampshire |
| 15 | John W. Mcloy | 53 | Head | Granite Cutter | New Hampshire |
| 16 | Elizabeth I. Mcloy | 50 | Wife | — | Maine |
| 17 | Mary B. Mcloy | 22 | Daughter | Grader | New Hampshire |
| 18 | Margaret C. Mcloy | 21 | Daughter | Typist | New Hampshire |
| 19 | Edward F. Mcloy | 20 | Son | Pressman'S Helper | New Hampshire |
| 20 | Richard J. Mcloy | 18 | Son | — | New Hampshire |
| 21 | Ann B. Mcloy | 17 | Daughter | — | New Hampshire |
| 22 | John H. Mcloy | 16 | Son | — | New Hampshire |
| 23 | Winifred C. Mcloy | 14 | Daughter | — | New Hampshire |
| 24 | Jeannette E. Mcloy | 11 | Daughter | — | New Hampshire |
| 25 | Teresa E. Mcloy | 8 | Daughter | — | New Hampshire |
| 26 | Paul Farwell | 5 | Ward | — | Massachusetts |
| 27 | Earl W. Pluff | 30 | Head | Machine Operator | Massachusetts |
| 28 | Margaret A. Pluff | 31 | Wife | — | New Hampshire |
| 29 | Madeleine A. Pluff | 8 | Daughter | — | New Hampshire |
| 30 | James F. Mcdonald THIS PERSON | 44 | Head | Caretaker | New Hampshire |
| 31 | Adah I. Mcdonald | 26 | Wife | — | Massachusetts |
| 32 | James F. Mcdonald | 7 | Son | — | Massachusetts |
| 33 | M. Irene Mcdonald | 3 | Daughter | — | New Hampshire |
| 34 | Theodore N. Floros | 28 | Head | Waiter | Maine |
| 35 | Leona M. Floros | 24 | Wife | Waitress | Indiana |
| 36 | Louise Hart | 54 | Head | — | New Hampshire |
| 37 | Mary L. Hart | 38 | Daughter | Typist | New Hampshire |
| 38 | Wilfred N. Hart | 20 | Son | Gathering Machine Helper | New Hampshire |
| 39 | Richard H. Hart | 23 | Son | Folding Machine Helper | New Hampshire |
| 40 | Irene M. Hart | 22 | Daughter-in-law | Waitress | New Hampshire |
Related Census Records
Pedigree Summary
James
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)