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John Blair — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Monroe, Michigan
Our Model Tree links this John Blair across the 1910, 1920 and 1930 US Censuses in Monroe, Michigan (XGBoost, ~Confirmed) — first a head (b.~1880), then head of a 9-person household.
Age 50
b. ~1880
Male
Head
Born: Michigan
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Monroe, Michigan |
| Surname | Blair |
| Given Name | John C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 25 |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Additional Details | |
| Occupation | Farmer |
| Industry | Truck Farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Veteran | No |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Farmer |
| Township / Ward | Bedford Township Pt 1 |
| Est. Birth Year | ~1880 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Sylvia Blair | Daughter | — | 15 | ~1915 |
| Dorothy Blair | Daughter | — | 2 | ~1928 |
| Mary Blair | Daughter | — | 7 | ~1923 |
| Lillian Blair | Daughter | — | 5 | ~1925 |
| John Blair | Head | — | 50 | ~1880 |
| Hattie Blair | Other | — | 40 | ~1890 |
| Lewis Blair | Son | — | 8 | ~1922 |
| Albert Blair | Son | — | 20 | ~1910 |
| George Blair | Son | — | 12 | ~1918 |
Census Appearances
1910
Monroe, Michigan
Head, age 30
Monroe, Michigan · implied b. ~1880 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Michigan |
| Years Married | 5 |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | Laborer |
| Industry | Farm laborer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1920
Monroe, Michigan
Head, age 40
Monroe, Michigan · implied b. ~1880 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | John L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Monroe, Michigan
Head, age 50
Monroe, Michigan · implied b. ~1880 — 9 household members
| Surname | Blair |
| Given Name | John C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Michigan |
| Age at First Marriage | 25 |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | Farmer |
| Industry | Truck Farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Veteran | No |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 3 US Census years (1910, 1920 and 1930) in Monroe, Michigan, using XGBoost record linkage.
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This person
Anchor record
John Blair
Head · 1930 · age 50 · b. ~1880 · Michigan
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Monroe, Michigan
Open full size
1930 US Federal Census — Monroe, Michigan
Page Contents
50 people indexed on this census page (ia:1930:michigancensus00reel1012:0664)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | J. Conrad Meinhart | 64 | Head | — | Michigan |
| 2 | Effie M. Meinhart | 59 | Wife-H | — | Michigan |
| 3 | Harry R. Meinhart | 34 | Son | Assistant Secretary | Michigan |
| 4 | Walter C. Meinhart | 28 | Son | Farmer | Michigan |
| 5 | Helen E. Meinhart | 24 | Daughter | Office Clerk | Michigan |
| 6 | Ina M. Meinhart | 21 | Daughter | — | Michigan |
| 7 | Cecile E. Meinhart | 17 | Daughter | — | Michigan |
| 8 | Elda A. Meinhart | 13 | Daughter | — | Michigan |
| 9 | Leland H. Tufts | 31 | Head | Apprentice Maker | Ohio |
| 10 | Hannah A. Tufts | 23 | Wife-H | — | Michigan |
| 11 | Virginia A. Tufts | 4 | Daughter | — | Ohio |
| 12 | Marilyn J. Tufts | 2 | Daughter | — | Ohio |
| 13 | Emanuel M. Shaffer | 26 | Head | Assembler | Pennsylvania |
| 14 | Sarah E. Shaffer | 27 | Wife-H | — | Pennsylvania |
| 15 | Ira J. Shaffer | 5 | Daughter | — | Pennsylvania |
| 16 | Mae E. Shaffer | 3 | Daughter | — | Pennsylvania |
| 17 | George M. Shaffer | 1 | Son | — | Michigan |
| 18 | Frank J. Rae | 67 | Head | Farmer | Michigan |
| 19 | Josie L. Rae | 56 | Wife-H | — | Michigan |
| 20 | Antone J. De Jointe | 69 | Head | Farmer | Michigan |
| 21 | Lucy A. De Jointe | 68 | Wife-H | — | Michigan |
| 22 | Leodora A. De Jointe | 39 | Son | Carpenter | Michigan |
| 23 | Hallery J. De Jointe | 34 | Son | Farm Laborer | Michigan |
| 24 | Philip R. De Jointe | 44 | Son | Driver | Michigan |
| 25 | Ethel M. De Jointe | 34 | Daughter-in-law | — | Michigan |
| 26 | Mary L. De Jointe | 0 | Granddaughter | — | Michigan |
| 27 | John C. Blair THIS PERSON | 50 | Head | Farmer | Michigan |
| 28 | Hattie Blair | 40 | Wife-H | — | Ohio |
| 29 | Albert R. Blair | 20 | Son | Laborer | Michigan |
| 30 | Sylvia M. Blair | 15 | Daughter | — | Michigan |
| 31 | George L. Blair | 12 | Son | — | Michigan |
| 32 | Lewis R. Blair | 8 | Son | — | Michigan |
| 33 | Mary R. Blair | 7 | Daughter | — | Michigan |
| 34 | Lillian R. Blair | 5 | Daughter | — | Michigan |
| 35 | Dorothy M. Blair | 2 | Daughter | — | Michigan |
| 36 | Paul M. Diehl | 42 | Head | Machinist | Ohio |
| 37 | Carrie B. Diehl | 50 | Wife-H | Power Machine Operator | Michigan |
| 38 | Clair B. Diehl | 14 | Son | — | Ohio |
| 39 | Lois Thomas | 74 | Mother-in-law | — | Michigan |
| 40 | Henry Diehl | 87 | Father-H | — | Pennsylvania |
| 41 | Walter E. Myers | 24 | Head | Welder | Pennsylvania |
| 42 | Lena S. Myers | 21 | Wife-H | — | Pennsylvania |
| 43 | Mrs. Verna R. Myers | 2 | Daughter | — | Pennsylvania |
| 44 | Minnie C. Myers | 1 | Daughter | — | Pennsylvania |
| 45 | Esther La Plant | 70 | Head-HO | — | Michigan |
| 46 | George L. La Plant | 50 | Son | Farmer | Ohio |
| 47 | Isaac R. Kirk | 43 | Head | Farmer | Michigan |
| 48 | Dora E. Kirk | 43 | Wife-H | — | Michigan |
| 49 | Mildred C. Kirk | 19 | Daughter | Office Clerk | Michigan |
| 50 | Crawford A. Kirk | 14 | Son | — | Michigan |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)