JD
John Doherty — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ramsey-County, Minnesota
Our Model Tree links this John Doherty across the 1920, 1930 and 1940 US Censuses in Ramsey-County, Minnesota (XGBoost, ~Confirmed), with identified parents Mary & Mary — first a son (b.~1915), then head of a 4-person household.
Age 25
b. ~1915
Male
Son
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Ramsey-County, Minnesota |
| Surname | Doherty |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | St. Paul City |
| 1935 Residence (County) | Ramsey |
| Additional Details | |
| Occupation | Machinist Helper |
| Industry | Auto Engine mfg |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 970 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Machinist Helper |
| Township / Ward | St Paul City |
| Est. Birth Year | ~1915 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Doherty | Son | — | 25 | ~1915 |
| Thomas Doherty | Son | — | 22 | ~1918 |
| Mary Steffanus | Head | — | 73 | ~1867 |
| Margaret Doherty | Daughter | — | 51 | ~1889 |
Census Appearances
1920
Ramsey, Minnesota
Son, age 5
Ramsey, Minnesota · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Doherty |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Occupation | none |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Ramsey, Minnesota
Son, age 15
Ramsey, Minnesota · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Doherty |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Minnesota |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Ramsey-County, Minnesota
Son, age 25
Ramsey-County, Minnesota · implied b. ~1915 — 4 household members
| Surname | Doherty |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | St. Paul City |
| 1935 Residence (County) | Ramsey |
| Occupation | Machinist Helper |
| Industry | Auto Engine mfg |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 970 |
| Highest Grade | H 4 |
| 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 Doherty across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Steffens (~0.92 confidence) and mother Mary Steffanus (~0.92 confidence) and father John Doherty (~0.92 confidence) and mother Margaret Doherty (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Steffens
b. ~1867
Source mother
● Household
· direct · ~0.92
Mother
Mary Steffanus
b. ~1867
Source mother
● Household
· direct · ~0.92
Father
John Doherty
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Margaret Doherty
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Doherty
Son · 1940 · age 25 · b. ~1915 · Minnesota
★ You are viewing this record
Sibling
Thomas Doherty
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Doherty
Sibling · 1940 · age 51
Source co-child of head (derived)
● Co-child · derived · ~0.88
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
39 people indexed on this census page (nara:1940:m-t0627-01996-00431)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Delores Engel | 10 | Daughter | — | Minnesota |
| 2 | Houston Vrooman | 53 | Head | Labor | Minnesota |
| 3 | Nellie Vrooman | 43 | Wife | — | Iowa |
| 4 | Kenneth Soward | 21 | Step son | Messenger Boy | No Dakota |
| 6 | Rose Lauer | 87 | Head | — | New York |
| 7 | Mary Steffanus | 73 | Head | — | Austria |
| 8 | Margaret Doherty | 51 | Daughter | Office Clerk | Minnesota |
| 9 | John J. Doherty THIS PERSON | 25 | Son | Machinist Helper | Minnesota |
| 10 | Thomas E. Doherty | 22 | Son | Stock Clerk | Minnesota |
| 11 | Joseph Rhorne | 48 | Head | — | Minnesota |
| 12 | Emily Rhorne | 42 | Wife | Stock Clerk | Minnesota |
| 13 | Arthur Rhorne | 21 | Son | Stock Clerk | Minnesota |
| 14 | Katherine Rhorne | 10 | Daughter | — | Minnesota |
| 15 | William T. Micha | 48 | Head | Appraiser | Minnesota |
| 16 | Elizabeth Micha | 40 | Wife | — | Minnesota |
| 17 | William J. Jr. Micha | 18 | Son | New Worker | Minnesota |
| 18 | Jerome Micha | 16 | Son | New Worker | Minnesota |
| 19 | Elizabeth J. Micha | 13 | Daughter | — | Minnesota |
| 20 | Theresa A. Micha | 4 | Daughter | — | Minnesota |
| 21 | Carroll Green | 48 | Head | Clerk | Minnesota |
| 22 | Mary Green | 42 | Wife | — | Minnesota |
| 23 | Helen Green | 17 | Daughter | New Worker | Minnesota |
| 24 | Patrick Green | 13 | Son | — | Minnesota |
| 25 | James Green | 7 | Son | — | Minnesota |
| 26 | Mary K. Green | 5 | Daughter | — | Minnesota |
| 27 | Frank R. Slama | 70 | Head | Mail Department | Czecho Slovakia |
| 28 | Anna Slama | 67 | Wife | — | Czecho Slovakia |
| 29 | Edward Slama | 37 | Son | Surfacer And Polisher | Minnesota |
| 30 | Marie Slama | 31 | Daughter | — | Minnesota |
| 31 | Robert Slama | 7 | Grand son | — | Minnesota |
| 32 | Albert J. Slipka | 48 | Head | Book Binder | Minnesota |
| 33 | Katherine Slipka | 46 | Wife | — | Minnesota |
| 34 | Leonore Slipka | 18 | Daughter | New Worker | Minnesota |
| 35 | Robert Slipka | 16 | Son | New Worker | Minnesota |
| 36 | Raymond Slipka | 14 | Son | — | Minnesota |
| 37 | Rose Slipka | 78 | Head | — | Czecho Slovakia |
| 38 | Laura Moran | 43 | Head | — | Minnesota |
| 39 | Lorraine Moran | 16 | Daughter | New Worker | Minnesota |
| 40 | Edward Moran | 14 | Son | New Worker | Minnesota |
Pedigree Summary
John + 2 siblings
Gen 1 · 4 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)