RN
Robert Nichols — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hennepin-County, Minnesota
Our Model Tree links this Robert Nichols across the 1920, 1930 and 1940 US Censuses in Hennepin-County, Minnesota (XGBoost, ~Confirmed), with identified parents Carle & Mary — first a son (b.~1913), then head of a 6-person household.
Age 27
b. ~1913
Male
Son
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hennepin-County, Minnesota |
| Surname | Nichols |
| Given Name | Robert E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Minneapolis City |
| 1935 Residence (County) | Hennepin |
| Additional Details | |
| Occupation | Jr. Engineer |
| Industry | Sewer W.P.A. Construction |
| Class of Worker | GW |
| Hours Worked | 45 |
| Income (1939) | 1200 |
| Highest Grade | C-4 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Jr. Engineer |
| Township / Ward | Minneapolis City |
| Est. Birth Year | ~1913 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Lawrence Nichols | Son | — | 32 | ~1908 |
| Carle Nichols | Head | — | 65 | ~1875 |
| Mary Nichols | Daughter | — | 23 | ~1917 |
| Raymond Nichols | Son | — | 20 | ~1920 |
| Robert Nichols | Son | — | 27 | ~1913 |
| Mary Nichols | Spouse | — | 56 | ~1884 |
Census Appearances
1920
Hennepin, Minnesota
Son, age 7
Hennepin, Minnesota · implied b. ~1913 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nichols |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Minnesota |
| Occupation | none |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Hennepin, Minnesota
Son, age 17
Hennepin, Minnesota · implied b. ~1913 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nichols |
| Given Name | Robert E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Minnesota |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Hennepin-County, Minnesota
Son, age 27
Hennepin-County, Minnesota · implied b. ~1913 — 6 household members
| Surname | Nichols |
| Given Name | Robert E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Minneapolis City |
| 1935 Residence (County) | Hennepin |
| Occupation | Jr. Engineer |
| Industry | Sewer W.P.A. Construction |
| Class of Worker | GW |
| Hours Worked | 45 |
| Income (1939) | 1200 |
| 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 Robert Nichols across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Carle Nichols (~0.92 confidence) and mother Mary Nichols (~0.92 confidence) and mother Mary Nichols (~0.92 confidence) and father Earle Nichols (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Carle Nichols
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Mary Nichols
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Mary Nichols
b. ~1884
Source mother
● Household
· direct · ~0.92
Father
Earle Nichols
b. ~1885
Source father
● Household
· direct · ~0.92
This person
Anchor record
Robert Nichols
Son · 1940 · age 27 · b. ~1913 · Minnesota
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Sibling
Mary Nichols
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Nichols
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Nichols
Sibling · 1940 · age 20
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 — Hennepin-County, Minnesota
Open full size
1940 US Federal Census — Hennepin-County, Minnesota
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01987-00591)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Carle E. Nichols | 65 | Head | Clerk | New Hampshire |
| 42 | Mary A. Nichols | 56 | Wife | — | Minnesota |
| 43 | Robert E. Nichols THIS PERSON | 27 | Son | Jr. Engineer | Minnesota |
| 44 | Mary L. Nichols | 23 | Daughter | Modiste | Minnesota |
| 45 | Raymond A. Nichols | 20 | Son | Laborer | Minnesota |
| 46 | Lawrence A. Nichols | 32 | Son | New Worker | Minnesota |
| 47 | Emma Bertrand | 58 | Head | — | Minnesota |
| 48 | Edwin Greene | 49 | Head | — | Illinois |
| 49 | Katherine Greene | 54 | Wife | — | Minnesota |
| 50 | Hiram Thomasson | 57 | Head | Mechanic | Illinois |
| 51 | Emma Thomasson | 57 | Wife | — | Illinois |
| 52 | Katherine Thomasson | 15 | Daughter | — | Minnesota |
| 53 | Laramie O'Brien | 42 | Son-in-law | Electrician | Iowa |
| 54 | Velma O'Brien | 33 | Daughter | — | Illinois |
| 55 | Martha M. Baker | 50 | Head | — | Minnesota |
| 56 | James S. Baker | 22 | Son | Salesman | Minnesota |
| 57 | Robert E. Baker | 18 | Son | Porter | Minnesota |
| 58 | Eleanor M. Baker | 17 | Daughter | Kitchen Girl | Minnesota |
| 59 | Gordon Mcardle | 25 | Head | Truck Driver | Minnesota |
| 60 | June Mcardle | 25 | Wife | — | Minnesota |
| 61 | Dennis Mcardle | 5 | Son | — | Minnesota |
| 62 | Karen Mcardle | 3 | Son | — | Minnesota |
| 63 | May M. Reynolds | 69 | Mother-in-law | — | Minnesota |
| 64 | Herbert Knight | 53 | Head | Fireman | Minnesota |
| 65 | Veronica Knight | 37 | Wife | — | Nebraska |
| 66 | Dennis Knight | 4 | Son | — | Minnesota |
| 67 | Theodore R. Knight | 2 | Son | — | Minnesota |
| 68 | Mary Jane Gray | 63 | Mother-in-law | Floor Lady | Iowa |
| 69 | Olaf Reisler | 56 | Head | Carpenter | Norway |
| 70 | Mary Reisler | 58 | Wife | — | Norway |
| 71 | Lena Hustad | 71 | Head | — | Norway |
| 72 | John W. Hanson | 57 | Head | Salesman | England |
| 73 | Alvina Hanson | 56 | Wife | — | Canada Eng. |
| 74 | Una I. Hanson | 25 | Daughter | Stenographer | Canada Eng. |
| 75 | Mrs. Henry Williams | 28 | Son-in-law's mother | Bookkeeper | Mexico |
| 76 | Audrey M. Williams | 23 | Daughter-in-law | — | Canada Eng. |
| 77 | Jack Steinmetz | 15 | Lodger | — | Minnesota |
| 78 | William B. Holt | 46 | Head | Physician | Minnesota |
| 79 | Marion M. Holt | 46 | Wife | Typist Clerk | Wisconsin |
Pedigree Summary
Robert + 3 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)