MN
Mary Nichols — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Boone-County, Missouri
Our Model Tree links this Mary Nichols across the 1920, 1930 and 1940 US Censuses in Boone-County, Missouri (XGBoost, ~Confirmed) — first a spouse (b.~1882), then head of a 5-person household.
Age 58
b. ~1882
Female
Spouse
Born: Missouri
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Boone-County, Missouri |
| Surname | Nichols |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | Missouri Township |
| 1935 Residence (County) | Boone |
| Additional Details | |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Missouri Township |
| Est. Birth Year | ~1882 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| V Nichols | Head | — | 62 | ~1878 |
| William Shaw | Other | — | 3 | ~1937 |
| Lonnie Nichols | Son | — | 18 | ~1922 |
| William Nichols | Son | — | 12 | ~1928 |
| Mary Nichols | Spouse | — | 58 | ~1882 |
Census Appearances
1920
Boone, Missouri
Spouse, age 40
Boone, Missouri · implied b. ~1880 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nichols |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1930
Boone, Missouri
Spouse, age 48
Boone, Missouri · implied b. ~1882 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nichols |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Missouri |
| Age at First Marriage | 18 |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Boone-County, Missouri
Spouse, age 58
Boone-County, Missouri · implied b. ~1882 — 5 household members
| Surname | Nichols |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Missouri |
| 1935 Residence (City) | Missouri Township |
| 1935 Residence (County) | Boone |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
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 Nichols across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Nichols
Spouse · 1940 · age 58 · b. ~1882 · Missouri
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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 — Boone-County, Missouri
Open full size
1940 US Federal Census — Boone-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02086-00860)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | W. M. Morris | 38 | Head | Farmer | Missouri |
| 2 | Nichols, Forest Morris | 42 | Boarder | Farmer | Missouri |
| 3 | John E. Carlos | 79 | Head | Farmer | Arkansas |
| 4 | Cordelia Carlos | 59 | Wife | — | Missouri |
| 5 | Charles H. Carlos | 42 | Son | Farmer | Missouri |
| 6 | C. P. Mrs. Callison | 41 | Head | Teaching | Missouri |
| 7 | Joe Callison | 11 | Son | — | Florida |
| 8 | Carolyn Callison | 9 | Daughter | — | Texas |
| 9 | Charles Callison | 7 | Son | — | Texas |
| 10 | V. H. Nichols | 62 | Head | Farmer | Missouri |
| 11 | Mary Nichols THIS PERSON | 58 | Wife | — | Missouri |
| 12 | Lonnie D. Nichols | 18 | Son | Farm Work | Missouri |
| 13 | William Nichols | 12 | Son | — | Missouri |
| 14 | William Shaw | 3 | Grand son | — | Missouri |
| 15 | Azariah Mize | 69 | Head | Farmer | Indiana |
| 16 | Bertha Mize | 35 | Wife | — | Missouri |
| 17 | Dora Emma Mize | 14 | Daughter | — | Missouri |
| 18 | Helen Irene Mize | 10 | Daughter | — | Missouri |
| 19 | Sarah Louise Mize | 9 | Daughter | — | Missouri |
| 20 | William A. Mize | 8 | Son | — | Missouri |
| 21 | Hazel Katherine Mize | 5 | Daughter | — | Missouri |
| 22 | Cora May Mize | 3 | Daughter | — | Missouri |
| 23 | Gladys M. Mize | 1 | Daughter | — | Missouri |
| 24 | Sam C. Strawn | 47 | Head | Farmer | Missouri |
| 25 | John Strawn | 19 | Son | Farmer | Missouri |
| 26 | Sam Jr. Strawn | 12 | Son | — | Missouri |
| 27 | A. D. Nichols | 68 | Head | Farmer | Missouri |
| 28 | Larken Nelson | 37 | Helper | Farmer | Arkansas |
| 29 | R. L. Watson | 70 | Head | Farmer | Missouri |
| 30 | Rosie Watson | 61 | Wife | — | Missouri |
| 31 | Catherine Payne | 14 | Grand daughter | — | Missouri |
| 32 | Ernest Brown | 56 | Head | Farmer | Missouri |
| 33 | Herman S. Nichols | 41 | Head | Farm Work | Missouri |
| 34 | Ollie Nichols | 19 | Wife | — | Missouri |
| 35 | Callie Fern Nichols | 3 | Daughter | — | Missouri |
| 36 | David Hutton | 68 | Head | Farmer | Missouri |
| 37 | Claudia Hutton | 62 | Wife | — | Missouri |
| 38 | Joseph S. Hutton | 32 | Son | Farmer | Missouri |
| 39 | Effie T. Brown | 43 | Daughter | — | Missouri |
| 40 | Cleo E. Brown | 18 | Grand son | Farm Work | Missouri |
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)