MN
Mary Nicholson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Clay-County, Missouri
Our Model Tree links this Mary Nicholson across the 1930 and 1940 US Censuses in Clay-County, Missouri (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 9-person household.
Age 14
b. ~1926
Female
Daughter
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Clay-County, Missouri |
| Surname | Nicholson |
| Given Name | Mary H |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Birmingham town |
| 1935 Residence (County) | Clay |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Birmingham Town |
| Est. Birth Year | ~1926 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ethel Nicholson | Daughter | — | 8 | ~1932 |
| Mary Nicholson | Daughter | — | 14 | ~1926 |
| Pauline Nicholson | Daughter | — | 12 | ~1928 |
| Daisy Nicholson | Spouse | — | 44 | ~1896 |
| Ed Nicholson | Head | — | 58 | ~1882 |
| Marvin Nicholson | Son | — | 24 | ~1916 |
| Melvin Nicholson | Son | — | 16 | ~1924 |
| Harold Nicholson | Son | — | 18 | ~1922 |
| Johnie Nicholson | Son | — | 22 | ~1918 |
Census Appearances
1930
Clay, Missouri
Daughter, age 4
Clay, Missouri · implied b. ~1926 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nicholson |
| Given Name | Mary Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Can Read/Write | No |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Clay-County, Missouri
Daughter, age 14
Clay-County, Missouri · implied b. ~1926 — 9 household members
| Surname | Nicholson |
| Given Name | Mary H |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | Birmingham town |
| 1935 Residence (County) | Clay |
| Class of Worker | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| 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 Nicholson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Nicholson
Daughter · 1940 · age 14 · b. ~1926 · Missouri
★ You are viewing this record
Sibling
Melvin Nicholson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marvin Nicholson
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ethel Nicholson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Johnie Nicholson
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Pauline Nicholson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Nicholson
Sibling · 1940 · age 18
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 — Clay-County, Missouri
Open full size
1940 US Federal Census — Clay-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02097-00219)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sam L Skidmore | 33 | Head | Operating Saw | Missouri |
| 2 | Bessie B Skidmore | 27 | Wife | — | Missouri |
| 3 | William H Skidmore | 10 | Son | — | Missouri |
| 4 | Sam D White | 55 | Head | Farmer | Missouri |
| 5 | Hattie B White | 48 | Wife | — | Missouri |
| 6 | Robert D White | 19 | Son | Farm Hand | Missouri |
| 7 | William A White | 17 | Son | Cleaning Man | Oklahoma |
| 8 | Samuel D White | 13 | Son | — | Missouri |
| 9 | Anna G White | 10 | Daughter | — | Missouri |
| 10 | Indra E Rearman | 35 | Head | Housework | Arkansas |
| 11 | Hellen M Rearman | 16 | Daughter | — | Arkansas |
| 12 | Sybil R Rearman | 12 | Daughter | — | Arkansas |
| 13 | Dina G Rearman | 8 | Daughter | — | Arkansas |
| 14 | Nina L Rearman | 8 | Daughter | — | Arkansas |
| 15 | Wayne R Rearman | 5 | Son | — | Missouri |
| 16 | Charles E Lanty | 32 | Head | Section Hand | Kansas |
| 17 | Isabell M Lanty | 31 | Wife | — | Missouri |
| 18 | Franklin S Lanty | 10 | Son | — | Missouri |
| 19 | Bonnie D Lanty | 7 | Daughter | — | Missouri |
| 20 | George C Lanty | 3 | Daughter | — | Missouri |
| 21 | Emma Breeden | 52 | Head | — | Missouri |
| 22 | John E Harias | 54 | Head | Rr Station Agt | Kansas |
| 23 | Beryl S Harias | 46 | Wife | — | Missouri |
| 24 | William A Clemons | 57 | Brother-in-law | — | Missouri |
| 25 | Nellie R Clemons | 51 | Sister-in-law | — | Missouri |
| 26 | Ed P Nicholson | 58 | Head | Section Hand | Missouri |
| 27 | Daisy M Nicholson | 44 | Wife | — | Missouri |
| 28 | Marvin E Nicholson | 24 | Son | Farm Hand | Missouri |
| 29 | Johnie G Nicholson | 22 | Son | Farm Hand | Missouri |
| 30 | Harold R Nicholson | 18 | Son | Off Bearer | Missouri |
| 31 | Melvin E Nicholson | 16 | Son | Farm Hand | Missouri |
| 32 | Mary H Nicholson THIS PERSON | 14 | Daughter | — | Missouri |
| 33 | Pauline M Nicholson | 12 | Daughter | — | Missouri |
| 34 | Ethel L Nicholson | 8 | Daughter | — | Missouri |
| 35 | Luelling D Hampton | 72 | Head | — | Iowa |
| 36 | Nora E Hampton | 61 | Wife | — | Kansas |
| 37 | Delmer E Routon | 25 | Head | Engineer | Missouri |
| 38 | Pansy L Routon | 24 | Wife | — | Arkansas |
| 39 | Donald L Routon | 6 | Son | — | Missouri |
| 40 | Ida M Routon | 1 | Daughter | — | Missouri |
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)