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John Mcnamara — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mountrail-County, North Dakota
Our Model Tree links this John Mcnamara across the 1910, 1920, 1930 and 1940 US Censuses in Mountrail-County, North Dakota (XGBoost, ~Confirmed) — first a head (b.~1872), then head of a 6-person household.
Age 68
b. ~1872
Male
Head
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mountrail-County, North Dakota |
| Surname | McNamara |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Wayzetta Twp |
| 1935 Residence (County) | Mountrail |
| Additional Details | |
| Industry | Farmer |
| Class of Worker | Farming |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Wayzetta Twp |
| Est. Birth Year | ~1872 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Agatha Mcnamara | Daughter | — | 25 | ~1915 |
| John Mcnamara | Head | — | 68 | ~1872 |
| Donald Mcnamara | Son | — | 29 | ~1911 |
| Gordon Mcnamara | Son | — | 26 | ~1914 |
| John Mcnamara | Son | — | 28 | ~1912 |
| Sadie Mcnamara | Spouse | — | 63 | ~1877 |
Census Appearances
1910
Mountrail, North …
Head, age 36
Mountrail, North Dakota · implied b. ~1874 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNamara |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Years Married | 1 |
| Father's Birthplace | Ire English |
| Mother's Birthplace | Ire English |
| Occupation | Farmer |
| Industry | General farm |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1920
Mountrail, North …
Head, age 46
Mountrail, North Dakota · implied b. ~1874 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNamara |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | Emp |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Mountrail, North …
Head, age 57
Mountrail, North Dakota · implied b. ~1873 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNamara |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 36 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | E |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Mountrail-County, North …
Head, age 68
Mountrail-County, North Dakota · implied b. ~1872 — 6 household members
| Surname | McNamara |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Wayzetta Twp |
| 1935 Residence (County) | Mountrail |
| Industry | Farmer |
| Class of Worker | Farming |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 John Mcnamara across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Mcnamara
Head · 1940 · age 68 · b. ~1872 · North Dakota
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Mountrail-County, North Dakota
Open full size
1940 US Federal Census — Mountrail-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03008-00383)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Arthur Moerke | 15 | Head | Farmer | North Dakota |
| 42 | Emilge Moerke | 90 | Mother | — | Germany |
| 43 | Julius Rosons | 73 | Head | Farmer | Minnesota |
| 44 | Lawrence Stoner | 47 | Head | Laborer | Indiana |
| 45 | Mearle Stoner | 44 | Wife | — | Indiana |
| 46 | Mary Alice Wolfson | 19 | Daughter | — | Indiana |
| 47 | Stella S. Stefanski | 14 | Daughter | — | Indiana |
| 48 | August Rosons | 65 | Head | Farmer | Minnesota |
| 49 | Maggie Rosons | 54 | Wife | — | South Dakota |
| 50 | August Rosons | 35 | Son | — | South Dakota |
| 51 | James Rosons | 26 | Son | — | North Dakota |
| 52 | Minnie Rosons | 17 | Daughter | — | North Dakota |
| 53 | Dorothy Rosons | 15 | Daughter | — | North Dakota |
| 54 | Bud Rosons | 13 | Son | — | North Dakota |
| 55 | Helen Rosons | 12 | Daughter | — | North Dakota |
| 56 | Leonard Rosons | 10 | Son | — | North Dakota |
| 57 | Floyd E. Hauge | 33 | Head | Farmer | North Dakota |
| 58 | Lillian B. Hauge | 32 | Wife | — | North Dakota |
| 59 | Maxine L. Hauge | 8 | Daughter | — | North Dakota |
| 60 | Floyd H. Hauge | 4 | Son | — | North Dakota |
| 61 | Henry Russell | 37 | Head | Grader Operator | North Dakota |
| 62 | Martha M. Russell | 31 | Wife | — | North Dakota |
| 63 | Adeline M. Price | 11 | Daughter | — | North Dakota |
| 64 | John W. Mcnamara THIS PERSON | 68 | Head | — | Minnesota |
| 65 | Sadie M. Mcnamara | 63 | Wife | — | Minnesota |
| 66 | Donald M. Mcnamara | 29 | Son | Oiler | North Dakota |
| 67 | John L. Mcnamara | 28 | Son | — | North Dakota |
| 68 | Gordon J. Mcnamara | 26 | Son | Farmer | North Dakota |
| 69 | Agatha J. Mcnamara | 25 | Daughter | Waitress | North Dakota |
| 70 | Christ C. Weflen | 63 | Head | Farmer | Norway |
| 71 | Signe Weflen | 64 | Wife | — | Norway |
| 72 | Olav C. H. Weflen | 23 | Son | Farmer | North Dakota |
| 73 | Signe C. Weflen | 17 | Daughter | — | North Dakota |
| 74 | Nels H. Nesheim | 61 | Head | Farmer | Norway |
| 75 | Gunhild Nesheim | 56 | Wife | — | Norway |
| 76 | Gudrun Nesheim | 24 | Daughter | — | North Dakota |
| 77 | Janet M. Nesheim | 22 | Daughter | — | North Dakota |
| 78 | Edward O. Nesheim | 18 | Son | — | North Dakota |
| 79 | Harold Nesheim | 15 | Son | — | North Dakota |
| 80 | Peder B. Nesheim | 14 | Son | — | North Dakota |
Related Census Records
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)