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James Jensen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mason-County, Michigan
Our Model Tree links this James Jensen across the 1920, 1930 and 1940 US Censuses in Mason-County, Michigan (XGBoost, ~Confirmed) — first a head (b.~1893), then head of a 4-person household.
Age 47
b. ~1893
Male
Head
Born: Michigan
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Mason-County, Michigan |
| Surname | Jensen |
| Given Name | James Ruby |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Widowed |
| Birthplace | Michigan |
| 1935 Residence (City) | Summit Twp |
| 1935 Residence (County) | Mason |
| Additional Details | |
| Occupation | farming |
| Industry | own farm |
| Class of Worker | E |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Farming |
| Township / Ward | Summit Twp |
| Est. Birth Year | ~1893 |
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 |
|---|---|---|---|---|
| Rhea Jensen | Daughter | — | 19 | ~1921 |
| James Jensen | Head | — | 47 | ~1893 |
| Chilton Jensen | Son | — | 23 | ~1917 |
| James Jensen | Son | — | 21 | ~1919 |
Census Appearances
1920
Mason, Michigan
Head, age 29
Mason, Michigan · implied b. ~1891 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | James G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Michigan |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Danish |
| Home Owned/Rented | R |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Mason, Michigan
Head, age 39
Mason, Michigan · implied b. ~1891 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | James A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 24 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Radio Set | R |
| Veteran | No |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Mason-County, Michigan
Head, age 47
Mason-County, Michigan · implied b. ~1893 — 4 household members
| Surname | Jensen |
| Given Name | James Ruby |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Widowed |
| Birthplace | Michigan |
| 1935 Residence (City) | Summit Twp |
| 1935 Residence (County) | Mason |
| Occupation | farming |
| Industry | own farm |
| Class of Worker | E |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Jensen across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
James Jensen
Head · 1940 · age 47 · b. ~1893 · Michigan
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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 — Mason-County, Michigan
Open full size
1940 US Federal Census — Mason-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01788-00541)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rose Hannah Sheldon | 35 | Wife | H. | New York State |
| 2 | Myrtle Hitch | 55 | Head | Farming | Michigan |
| 3 | Grace Hull | 53 | Sister | H. | Michigan |
| 4 | Robert E. Hull | 15 | Son | S | Michigan |
| 5 | Raymond Miller | 19 | Hired man | Farm Laborer | Michigan |
| 6 | Bert Miller | 38 | Hired man | Farm Laborer | Michigan |
| 7 | A. J. Houk | 67 | Head | Farming | Michigan |
| 8 | Almeda Houk | 66 | Wife | H | Michigan |
| 9 | Arlington Houk | 36 | Head | Farming | Michigan |
| 10 | Reta Houk | 36 | Wife | H | Michigan |
| 11 | Ronald Houk | 6 | Son | — | Michigan |
| 12 | Audrey Jean Houk | 2 | Daughter | — | Michigan |
| 13 | Barbara Jane Houk | 2 | Daughter | — | Michigan |
| 14 | Alex C. Benedict | 65 | Head | Farming | Michigan |
| 15 | Minnie Benedict | 67 | Wife | H | Irish Free State |
| 16 | Minnie Mcclatchie | 73 | Head | Ot. | Michigan |
| 17 | Robert Mcclatchie | 69 | Sister | H | Michigan |
| 18 | Myrtle Mcclatchie | 60 | Sister | H | Michigan |
| 19 | Dan French | 55 | Head | Laborer | Michigan |
| 20 | Martha Jane French | 12 | Son | S | Michigan |
| 21 | Henry C. Cornstubble | 43 | Head | Farming | Holland |
| 22 | Florence Cornstubble | 40 | Wife | H | Michigan |
| 23 | Henry Jr. Cornstubble | 18 | Son | Surveying | Michigan |
| 24 | Thomas Lloyd Cornstubble | 16 | Son | Farm Laborer | Michigan |
| 25 | Laura Louise Cornstubble | 14 | Daughter | S | Michigan |
| 26 | Raymond Cornstubble | 6 | Son | — | Michigan |
| 27 | Dorothy May Cornstubble | 3 | Daughter | — | Michigan |
| 28 | Donald Dale Cornstubble | 1 | Son | — | Michigan |
| 29 | John Haigh | 47 | Head | Farming | Michigan |
| 30 | Lillian Mae Haigh | 48 | Wife | H | Illinois |
| 31 | Russel Haigh | 17 | Son | S | Michigan |
| 32 | Ray Hall | 26 | Head | Farm Laborer | Michigan |
| 33 | Dorothy Hall | 24 | Wife | H | Michigan |
| 34 | Helen Hall | 1 | Daughter | — | Michigan |
| 35 | Emil Van Arkel | 40 | Head | Country Store | Belgium |
| 36 | Pauline Van Arkel | 38 | Wife | Clerk | Michigan |
| 37 | James Ruby Jensen THIS PERSON | 47 | Head | Farming | Michigan |
| 38 | Chilton A. Jensen | 23 | Son | Auto Mechanic | Wisconsin |
| 39 | James A. Jensen | 21 | Son | Farm Laborer | Wisconsin |
| 40 | Rhea Jensen | 19 | Daughter | Teaching | Michigan |
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)