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John Brown — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ramsey-County, Minnesota
Our Model Tree links this John Brown across the 1920, 1930 and 1940 US Censuses in Ramsey-County, Minnesota (XGBoost, ~Confirmed), with identified parents John & John — first a head (b.~1909), then head of a 5-person household.
Age 31
b. ~1909
Male
Head
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ramsey-County, Minnesota |
| Surname | Brown |
| Given Name | John A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | St Paul |
| 1935 Residence (County) | Ramsey |
| Additional Details | |
| Occupation | Geologist |
| Industry | Mining |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 3300 |
| Highest Grade | C 4 |
| 1935 Residence | Same Place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Geologist |
| Township / Ward | St Paul |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Judith Brown | Daughter | — | 2 | ~1938 |
| John Brown | Head | — | 31 | ~1909 |
| Carolyn Cohn | Other | — | 21 | ~1919 |
| Christopher Brown | Son | — | 4 | ~1936 |
| Ruth Brown | Spouse | — | 35 | ~1905 |
Census Appearances
1920
Ramsey, Minnesota
Son, age 11
Ramsey, Minnesota · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Canada |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Ramsey, Minnesota
Son, age 21
Ramsey, Minnesota · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Canada Eng. |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Ramsey-County, Minnesota
Head, age 31
Ramsey-County, Minnesota · implied b. ~1909 — 5 household members
| Surname | Brown |
| Given Name | John A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | St Paul |
| 1935 Residence (County) | Ramsey |
| Occupation | Geologist |
| Industry | Mining |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 3300 |
| Highest Grade | C 4 |
| 1935 Residence | Same Place |
| 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 Brown across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Brown (~0.92 confidence) and father John Brown (~0.92 confidence) and mother Florence Brown (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Brown
b. ~1877
Source father
● Household
· direct · ~0.92
Father
John Brown
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Florence Brown
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Brown
Head · 1940 · age 31 · b. ~1909 · Minnesota
★ 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 — Ramsey-County, Minnesota
Open full size
1940 US Federal Census — Ramsey-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02002-00393)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Winefred Grafft | 63 | Wife | — | Indiana |
| 2 | Marvel E Grafft | 23 | Daughter | Receptionist | Minnesota |
| 3 | A. J. Conroy | 42 | Head | Owner | Minnesota |
| 4 | Marjorie Conroy | 35 | Wife | — | Minnesota |
| 5 | Anthony Conroy | 8 | Son | — | Minnesota |
| 6 | Bernice Kersting | 18 | Maid | Maid | Minnesota |
| 7 | W. H. Smith | 45 | Head | General Manager | New York |
| 8 | J. C. Smith | 79 | Mother | — | Maryland |
| 9 | Anna Hallenberger | 61 | Maid | Maid | Minnesota |
| 10 | Robert Gerber | 36 | Head | Broker | Minnesota |
| 11 | Ester Gerber | 35 | Wife | — | Minnesota |
| 12 | Robert Gerber | 15 | Son | — | Minnesota |
| 13 | Caroline Gerber | 12 | Daughter | — | Minnesota |
| 14 | W. W. Hunter | 42 | Head | Sales Promotion | Michigan |
| 15 | Marion Hunter | 37 | Wife | — | Kansas |
| 16 | William Hunter | 1 | Son | — | Minnesota |
| 17 | Regina Tachida | 29 | Maid | Maid | Minnesota |
| 18 | John A Brown THIS PERSON | 31 | Head | Geologist | Minnesota |
| 19 | Ruth Brown | 35 | Wife | — | Minnesota |
| 20 | Christopher Brown | 4 | Son | — | Minnesota |
| 21 | Judith Brown | 2 | Daughter | — | Minnesota |
| 22 | Carolyn Cohn | 21 | Maid | Maid | Minnesota |
| 23 | Attilio Costigliana | 59 | Head | President | Italy |
| 24 | Rose Costigliana | 35 | Wife | Secretary | Minnesota |
| 25 | Arthur Chrome | 53 | Head | Manager | Wisconsin |
| 26 | Theressa Chrome | 49 | Wife | — | So Dakota |
| 27 | William Chrome | 21 | Son | Credit Manager | Minnesota |
| 28 | Here Ends | None | Block 47 | — | — |
| 29 | Joseph Paper | 44 | Head | President | Minnesota |
| 30 | Lillian Paper | 36 | Wife | — | Iowa |
| 31 | Lewis Paper | 11 | Son | — | Minnesota |
| 32 | Roxanne Paper | 8 | Daughter | — | Minnesota |
| 33 | William Paper | 6 | Son | — | Minnesota |
| 34 | Mildred Nelson | 32 | Maid | Maid | Wisconsin |
| 35 | Julia Charley | 24 | Maid | — | No Dakota |
| 36 | Arthur Cammack | 49 | Head | Treasurer | Minnesota |
| 37 | Ann Cammack | 48 | Wife | — | Minnesota |
| 38 | Edward Cammack | 12 | Son | — | Minnesota |
| 39 | Susan Cammack | 9 | Daughter | — | Minnesota |
| 40 | Edna Haapala | 20 | Maid | Maid | Minnesota |
Pedigree Summary
John
Gen 1 · 3 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)