MC
Mary Carlson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bureau-County, Illinois
Our Model Tree links this Mary Carlson across the 1930 and 1940 US Censuses in Bureau-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1900), then head of a 8-person household.
Age 40
b. ~1900
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Bureau-County, Illinois |
| Surname | Carlson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Dover village |
| 1935 Residence (County) | Bureau |
| Additional Details | |
| Occupation | 38 |
| Industry | Laborer |
| Class of Worker | Canning factory |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | 38 |
| Township / Ward | Dover Village |
| Est. Birth Year | ~1900 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Carlson | Spouse | — | 40 | ~1900 |
| John Carlson | Son | — | 5 | ~1935 |
| Lowell Carlson | Head | — | 43 | ~1897 |
| Norris Carlson | Son | — | 16 | ~1924 |
| Roger Carlson | Son | — | 17 | ~1923 |
| Carol Carlson | Daughter | — | 10 | ~1930 |
| Lowell Carlson | Son | — | 19 | ~1921 |
| Marilyn Carlson | Daughter | — | 14 | ~1926 |
Census Appearances
1930
Bureau, Illinois
Other, age 32
Bureau, Illinois · implied b. ~1898 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Mary |
| Relationship to Head | Wife H |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 22 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Bureau-County, Illinois
Spouse, age 40
Bureau-County, Illinois · implied b. ~1900 — 8 household members
| Surname | Carlson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Dover village |
| 1935 Residence (County) | Bureau |
| Occupation | 38 |
| Industry | Laborer |
| Class of Worker | Canning factory |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Mary Carlson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Carlson
Spouse · 1940 · age 40 · b. ~1900 · Illinois
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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 — Bureau-County, Illinois
Open full size
1940 US Federal Census — Bureau-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00762-00052)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Carl Lockhart | 58 | Head | Laborer | West Virginia |
| 2 | May Lockhart | 32 | Daughter | Switchboard Operator | Illinois |
| 3 | Beverly Etheridge | 13 | Lodger | — | Illinois |
| 4 | George E Spake | 68 | Head | Proprietor | Illinois |
| 5 | Nora Spake | 65 | Wife | Clerk | Illinois |
| 6 | Sara F Null | 82 | Head | — | Pennsylvania |
| 7 | William G Smith | 65 | Son in law | Janitor | Illinois |
| 8 | Ethel L Smith | 57 | Daughter | — | Illinois |
| 9 | John H Doyle | 84 | Head | — | Pennsylvania |
| 10 | Clara M Doyle | 51 | Daughter | — | Pennsylvania |
| 11 | Jennie Woods | 89 | Head | — | Ohio |
| 12 | Merle Scoughton | 56 | Housekeeper | Housekeeper | Illinois |
| 13 | Elmer Hedlund | 27 | Head | — | Sweden |
| 14 | Amanda Hedlund | 53 | Wife | — | Illinois |
| 15 | Roland Alderman | 58 | Head | Attendant | Michigan |
| 16 | Ethel Alderman | 50 | Wife | — | Illinois |
| 17 | Harry Griffin | 62 | Head | Caretaker | Illinois |
| 18 | Julia Griffin | 61 | Wife | — | Illinois |
| 19 | Walter Griffin | 36 | Son | Truck Driver | Illinois |
| 20 | Louis E Woolley | 36 | Head | Proprietor | Illinois |
| 21 | Evelyn M Woolley | 32 | Wife | — | Illinois |
| 22 | James F Woolley | 2 | Son | — | Illinois |
| 23 | John L Woolley | 1 | Son | — | Illinois |
| 24 | Lowell D Carlson | 43 | Head | Electrician | Illinois |
| 25 | Mary Carlson THIS PERSON | 40 | Wife | 38 | Illinois |
| 26 | Lowell Carlson | 19 | Son | Laborer | Illinois |
| 27 | Roger Carlson | 17 | Son | — | Illinois |
| 28 | Norris Carlson | 16 | Son | — | Illinois |
| 29 | Marilyn Carlson | 14 | Daughter | — | Illinois |
| 30 | Carol Carlson | 10 | Daughter | — | Illinois |
| 31 | John Carlson | 5 | Son | — | Illinois |
| 32 | Charles Carlson | 76 | Head | — | Sweden |
| 33 | Sofie Carlson | 74 | Wife | — | Sweden |
| 34 | Alvin Darrah | 36 | Head | — | Arkansas |
| 35 | Maud Darrah | 33 | Wife | — | Illinois |
| 36 | Joanne Darrah | 8 | Daughter | — | Illinois |
| 37 | Frances Darrah | 5 | Daughter | — | Illinois |
| 38 | Betty A Darrah | 4 | Daughter | — | Illinois |
| 39 | Johnnie J Darrah | 3 | Daughter | — | Illinois |
| 40 | Joyce A Darrah | 1 | Daughter | — | Illinois |
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)