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Mary Blair — 1930 US Census Record
Linked across censuses1930 United States Federal Census · St Louis, Missouri
Our Model Tree links this Mary Blair across the 1920 and 1930 US Censuses in St Louis, Missouri (XGBoost, ~Confirmed) — first a spouse (b.~1894), then head of a 12-person household.
Age 36
b. ~1894
Female
Spouse
Born: Kentucky
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | St Louis, Missouri |
| Surname | Blair |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Age at First Marriage | 20 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | St Ferdinand Tp |
| Est. Birth Year | ~1894 |
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.
12 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ruth Blair | Daughter | — | 12 | ~1918 |
| Virginia Blair | Daughter | — | 16 | ~1914 |
| Dorothy Blair | Daughter | — | 5 | ~1925 |
| Edna Blair | Daughter | — | 14 | ~1916 |
| Myrtle Blair | Daughter | — | 7 | ~1923 |
| Thomas Blair | Head | — | 50 | ~1880 |
| Arthur Blair | Other | — | 23 | ~1907 |
| Mary Blair | Other | — | 26 | ~1904 |
| Mary Blair | Other | — | 6 | ~1924 |
| Walter Blair | Son | — | 10 | ~1920 |
| Lawrence Blair | Son | — | 15 | ~1915 |
| Mary Blair | Spouse | — | 36 | ~1894 |
Census Appearances
1920
St Louis, …
Spouse, age 26
St Louis, Missouri · implied b. ~1894 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
St Louis, …
Spouse, age 36
St Louis, Missouri · implied b. ~1894 — 12 household members
| Surname | Blair |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Age at First Marriage | 20 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 Blair across 2 US Census years (1920 and 1930) in St Louis, Missouri, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Blair
Spouse · 1930 · age 36 · b. ~1894 · Missouri
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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 — St Louis, Missouri
Open full size
1930 US Federal Census — St Louis, Missouri
Page Contents
50 people indexed on this census page (ia:1930:missouricensus00reel1226:0622)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles Piercy | 52 | Head | — | Missouri |
| 2 | Anna Vogelsang | 49 | Head | — | Missouri |
| 3 | Amelia Vogelsang | 21 | Daughter | — | Missouri |
| 4 | Selma Vogelsang | 27 | Daughter | — | Missouri |
| 5 | Mary Fuhal | 55 | Sister | — | Missouri |
| 6 | Cliff Hubert | 52 | Head | — | Germany |
| 7 | August West | 47 | Head | Farmer | Missouri |
| 8 | Gertrude West | 30 | Wife | — | Missouri |
| 9 | August West | 17 | Son | — | Missouri |
| 10 | Annabelle West | 15 | Daughter | — | Missouri |
| 11 | Guy West | 7 | Son | — | Missouri |
| 12 | Lawrence West | 5 | Son | — | Missouri |
| 13 | Harry West | 4 | Son | — | Missouri |
| 14 | John West | 2 | Son | — | Missouri |
| 15 | Mary West | 1 | Daughter | — | Missouri |
| 16 | Thomas E. Blair | 50 | Head | Farmer | Missouri |
| 17 | Mary E. Blair THIS PERSON | 36 | Wife | — | Kentucky |
| 18 | Virginia Blair | 16 | Daughter | — | Missouri |
| 19 | Edna Blair | 14 | Daughter | — | Missouri |
| 20 | Arthur Blair | 23 | Nephew | Laborer | Missouri |
| 21 | Mary Blair | 26 | Niece | — | Missouri |
| 22 | Mary Blair | 6 | Niece | — | Missouri |
| 23 | Lawrence Blair | 15 | Son | — | Missouri |
| 24 | Ruth Blair | 12 | Daughter | — | Missouri |
| 25 | Walter Blair | 10 | Son | — | Missouri |
| 26 | Myrtle Blair | 7 | Daughter | — | Missouri |
| 27 | Dorothy Blair | 5 | Daughter | — | Missouri |
| 28 | Henry Baker | 62 | Head | — | Switzerland |
| 29 | Margaret Baker | 50 | Wife | — | Germany |
| 30 | John Baker | 18 | Son | Laborer | Missouri |
| 31 | Nancy Spelling | 52 | Head | — | Pennsylvania |
| 32 | Louis Lange | 52 | Head | — | Missouri |
| 33 | Anna Lange | 41 | Wife | — | Illinois |
| 34 | Edna Lange | 20 | Daughter | — | Missouri |
| 35 | Verna Lange | 17 | Daughter | — | Missouri |
| 36 | Irene Lange | 13 | Daughter | — | Missouri |
| 37 | Louis Lange | 11 | Son | — | Missouri |
| 38 | Ludwig Grabner | 64 | Head | Farmer | Germany |
| 39 | Mary Grabner | 54 | Wife | — | Germany |
| 40 | Alfred Kruse | 23 | Lodger | Laborer | Missouri |
| 41 | Herman Wilhelm | 45 | Head | Farmer | Missouri |
| 42 | Hulda Wilhelm | 15 | Wife | — | Missouri |
| 43 | Hazel Wilhelm | 5 | Daughter | — | Missouri |
| 44 | H. H. Drakenstein | 52 | Head | Farmer | Missouri |
| 45 | Carrie Drakenstein | 42 | Wife | — | Kentucky |
| 46 | Myrtle Drakenstein | 12 | Daughter | — | Missouri |
| 47 | Chas. L. David | 49 | Head | Laborer | Kentucky |
| 48 | Lydia David | 43 | Wife | — | Missouri |
| 49 | Lydia Scott | 58 | Head | — | Tennessee |
| 50 | Linnie Scott | 53 | Wife | — | Tennessee |
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)