JB
John Blair — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Andrew-County, Missouri
Our Model Tree links this John Blair across the 1930 and 1940 US Censuses in Andrew-County, Missouri (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 10-person household.
Age 13
b. ~1927
Male
Son
Born: Missouri
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Andrew-County, Missouri |
| Surname | Blair |
| Given Name | John H. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Andrew |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Missouri |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
| Township / Ward | Jackson Township |
| Est. Birth Year | ~1927 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Wanda Blair | Daughter | — | 9 | ~1931 |
| Barbara Blair | Daughter | — | 4 | ~1936 |
| Elizabeth Blair | Daughter | — | 11 | ~1929 |
| Margaret Blair | Daughter | — | 6 | ~1934 |
| John Blair | Head | — | 40 | ~1900 |
| John Blair | Son | — | 13 | ~1927 |
| Robert Blair | Son | — | 3 | ~1937 |
| Donald Blair | Son | — | 1 | ~1939 |
| Thomas Blair | Son | — | 8 | ~1932 |
| Alice Blair | Spouse | — | 33 | ~1907 |
Census Appearances
1930
Andrew, Missouri
Other, age 3
Andrew, Missouri · implied b. ~1927 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | John W |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Missouri |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Occupation | none |
| Birth State | Missouri |
| Birth Country | United States |
| Birthplace (normalized) | missouri |
1940
Andrew-County, Missouri
Son, age 13
Andrew-County, Missouri · implied b. ~1927 — 10 household members
| Surname | Blair |
| Given Name | John H. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Missouri |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Andrew |
| Highest Grade | No 7 |
| 1935 Residence | Missouri |
| 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 John Blair across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Blair
Son · 1940 · age 13 · b. ~1927 · Missouri
★ You are viewing this record
Sibling
Donald Blair
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wanda Blair
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Blair
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Blair
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Blair
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Blair
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Blair
Sibling · 1940 · age 3
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 — Andrew-County, Missouri
Open full size
1940 US Federal Census — Andrew-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02081-00712)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marjorie L. Hunger | 27 | wife | — | Iowa |
| 2 | George D. Hunger | 2 | son | — | Missouri |
| 3 | Charles A. Limerly | 62 | head | Farmer | Missouri |
| 4 | Lula R. Limerly | 58 | wife | — | Missouri |
| 5 | Ralph E. Sayler | 23 | hired man | Farm Laborer | Missouri |
| 6 | Raymer J. Hardin | 33 | head | Digging Ditches | Missouri |
| 7 | Alma B. Hardin | 25 | wife | — | Arkansas |
| 8 | Wilma L. Hardin | 5 | daughter | — | Missouri |
| 9 | Ella Mae Hardin | 3 | daughter | — | Missouri |
| 10 | James H. Hardin | 1 | son | — | Missouri |
| 11 | Harvey M. Arn | 41 | head | Farmer | Missouri |
| 12 | Alpha E. Arn | 44 | wife | — | Missouri |
| 13 | Calvin B. Arn | 15 | son | — | Missouri |
| 14 | Wayne E. Arn | 10 | son | — | Missouri |
| 15 | Betty Lu Arn | 5 | daughter | — | Missouri |
| 16 | Elisha D. Davis | 47 | head | Farmer | Indiana |
| 17 | Maletta E. Davis | 31 | wife | — | Missouri |
| 18 | John H. Blair | 40 | head | Farmer | Missouri |
| 19 | Alice E. Blair | 33 | wife | — | Missouri |
| 20 | John H. Blair THIS PERSON | 13 | son | — | Missouri |
| 21 | Elizabeth Blair | 11 | daughter | — | Missouri |
| 22 | Wanda L. Blair | 9 | daughter | — | Missouri |
| 23 | Thomas B. Blair | 8 | son | — | Missouri |
| 24 | Margaret A. Blair | 6 | daughter | — | Missouri |
| 25 | Barbara Blair | 4 | daughter | — | Missouri |
| 26 | Robert O. Blair | 3 | son | — | Missouri |
| 27 | Donald L. Blair | 1 | son | — | Missouri |
| 28 | Mortimer D. Downey | 70 | head | Farmer | Illinois |
| 29 | Ida M. Downey | 66 | wife | — | Missouri |
| 30 | Benjamin F. Roberts | 71 | head | — | Missouri |
| 31 | Nellie Roberts | 66 | wife | — | Iowa |
| 32 | Loren C. Roberts | 32 | son | Farmer | Missouri |
| 33 | Cliff Davison | 64 | head | Looking Rock | Missouri |
| 34 | Milla Davison | 52 | wife | — | Missouri |
| 35 | Wanda M. Davison | 19 | daughter | — | Missouri |
| 36 | Emma F. Todd | 81 | head | — | Pennsylvania |
| 37 | Amos H. Hart | 57 | head | Carpenter | Missouri |
| 38 | Viola Hart | 49 | wife | Laundress | Missouri |
| 39 | Amos J. Hart | 16 | son | — | Colorado |
| 40 | Lee Lewis | 49 | head | Clergyman | Kansas |
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)