MC
Mary Carlson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marshall-County, Kansas
Our Model Tree links this Mary Carlson across the 1930 and 1940 US Censuses in Marshall-County, Kansas (XGBoost, ~Confirmed) — first a spouse (b.~1909), then head of a 7-person household.
Age 31
b. ~1909
Female
Spouse
Born: Kansas
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marshall-County, Kansas |
| Surname | Carlson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Murray twp |
| 1935 Residence (County) | Marshall |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Township / Ward | Murray Twp |
| Est. Birth Year | ~1909 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Eldner Carlson | Son | — | 11 | ~1929 |
| James Carlson | Son | — | 8 | ~1932 |
| Eugene Carlson | Son | — | 13 | ~1927 |
| Ivan Carlson | Son | — | 9 | ~1931 |
| Oscar Carlson | Head | — | 36 | ~1904 |
| Mary Carlson | Spouse | — | 31 | ~1909 |
| June Carlson | Daughter | — | 5 | ~1935 |
Census Appearances
1930
Marshall, Kansas
Spouse, age 21
Marshall, Kansas · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Mary L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Kansas |
| Age at First Marriage | 17 |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Kansas |
| Can Read/Write | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Marshall-County, Kansas
Spouse, age 31
Marshall-County, Kansas · implied b. ~1909 — 7 household members
| Surname | Carlson |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Murray twp |
| 1935 Residence (County) | Marshall |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 31 · b. ~1909 · Kansas
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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 — Marshall-County, Kansas
Open full size
1940 US Federal Census — Marshall-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01245-00444)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Otis Howard | 54 | Head | Farmer | Kansas |
| 2 | Mary Howard | 47 | Wife | — | Kansas |
| 3 | Luella Howard | 26 | Daughter | — | Kansas |
| 4 | Lawrence Howard | 19 | Son | — | Kansas |
| 5 | Lester Howard | 18 | Son | — | Kansas |
| 6 | Maxine Howard | 12 | Daughter | — | Kansas |
| 7 | Richard Howard | 6 | Son | — | Kansas |
| 8 | Joseph L. Glover | 65 | Head | Farmer | Indiana |
| 9 | Theron Glover | 27 | Son | Laborer | Kansas |
| 10 | James Glover | 25 | Son | Clerk | Kansas |
| 11 | Ernest Glover | 24 | Son | Clerk | Kansas |
| 12 | Marie Glover | 20 | Daughter | — | Kansas |
| 13 | Avis Glover | 17 | Daughter | — | Kansas |
| 14 | Termis Glover | 10 | Son | — | Kansas |
| 15 | Claude Carlson | 61 | Head | Farmer | Sweden |
| 16 | Beda Carlson | 60 | Wife | Laborer | Sweden |
| 17 | Everett Carlson | 30 | Son | Laborer | Kansas |
| 18 | Ben Houtzhaus | 31 | Head | Farmer | Kansas |
| 19 | Caroline Houtzhaus | 31 | Wife | — | Kansas |
| 20 | Robert L. Smith | 49 | Head | Farmer | Kansas |
| 21 | Margaret Smith | 44 | Wife | — | Kansas |
| 22 | Harlow Smith | 17 | Daughter | — | Kansas |
| 23 | Frances Smith | 15 | Daughter | — | Kansas |
| 24 | Robert Smith | 12 | Son | — | Kansas |
| 25 | Maxine Smith | 9 | Daughter | — | Kansas |
| 26 | Clinton Smith | 5 | Son | — | Kansas |
| 27 | Oscar Carlson | 36 | Head | Farmer | Kansas |
| 28 | Mary Carlson THIS PERSON | 31 | Wife | — | Kansas |
| 29 | Eugene Carlson | 13 | Son | — | Kansas |
| 30 | Eldner Carlson | 11 | Son | — | Kansas |
| 31 | Ivan Carlson | 9 | Son | — | Kansas |
| 32 | James Carlson | 8 | Son | — | Kansas |
| 33 | June Carlson | 5 | Daughter | — | Kansas |
| 34 | Sophia Witt | 65 | Head | Farmer | Kansas |
| 35 | Christine Witt | 22 | Daughter | — | Kansas |
| 36 | Joseph Kenworthy | 63 | Lodger | Laborer | Kansas |
| 37 | Frank Maddy | 47 | Head | Farmer | Kansas |
| 38 | Edith Maddy | 44 | Wife | — | Kansas |
| 39 | Nancy Maddy | 14 | Daughter | — | Kansas |
| 40 | Muriel Maddy | 9 | Son | — | Kansas |
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)