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Mary Blair — 1930 US Census Record
Model Tree available1930 United States Federal Census · Wayne, Michigan
Our Model Tree links this Mary Blair across the 1920, 1930 and 1940 US Censuses in Wayne, Michigan (XGBoost, ~Confirmed), with identified parents Andrew & Hattie — first a daughter (b.~1914), then head of a 5-person household.
Age 16
b. ~1914
Female
Daughter
Born: Michigan
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Wayne, Michigan |
| Surname | Blair |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Detroit City |
| Est. Birth Year | ~1914 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Rosemary Blair | Daughter | — | 14 | ~1916 |
| Mary Blair | Daughter | — | 16 | ~1914 |
| George Blair | Head | — | 41 | ~1889 |
| Kathleen Blair | Other | — | 33 | ~1897 |
| George Blair | Son | — | 5 | ~1925 |
Census Appearances
1920
Wayne, Michigan
Daughter, age 6
Wayne, Michigan · implied b. ~1914 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | Marion E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Wayne, Michigan
Daughter, age 16
Wayne, Michigan · implied b. ~1914 — 5 household members
| Surname | Blair |
| Given Name | Mary Lou |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Wayne-County, Michigan
Daughter, age 25
Wayne-County, Michigan · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blair |
| Given Name | Margaret E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Highland Park City |
| 1935 Residence (County) | Wayne |
| Occupation | Saleslady |
| Industry | Retail Dept. Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 690 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| 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 Mary Blair across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Andrew Blair (~0.92 confidence) and mother Hattie Blair (~0.92 confidence) and mother Eleanor Lawrence (~0.92 confidence) and father George Blair (~0.92 confidence) and father John Lawrence (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Andrew Blair
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Hattie Blair
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Eleanor Lawrence
b. ~1889
Source mother
● Household
· direct · ~0.92
Father
George Blair
b. ~1889
Source father
● Household
· direct · ~0.92
Father
John Lawrence
b. ~1890
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Blair
Daughter · 1930 · age 16 · b. ~1914 · Michigan
★ You are viewing this record
Sibling
George Blair
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosemary Blair
Sibling · 1930 · age 14
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
1930 US Federal Census — Wayne, Michigan
Open full size
1930 US Federal Census — Wayne, Michigan
Page Contents
50 people indexed on this census page (ia:1930:michigancensus00reel1052:0175)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Geo W Loly | 32 | Head | Car Repairer | Michigan |
| 2 | Mary M Loly | 28 | Wife-H | — | Michigan |
| 3 | Beatrice J Loly | 4 | Daughter | — | Michigan |
| 4 | Henry J Mulligan | 40 | Lodger | Salesman | Michigan |
| 5 | Stanley J Trudell | 44 | Head | Iron Worker | Canada French |
| 6 | Alice G Trudell | 41 | Wife-H | — | Michigan |
| 7 | Fred E Dunn | 42 | Head | Bricklayer | Michigan |
| 8 | Verna E Dunn | 44 | Wife-H | — | Ohio |
| 9 | Hazel L Dunn | 16 | Daughter | — | Michigan |
| 10 | Andrew Kasamen | 38 | Lodger | Inspector | Norway |
| 11 | Mcdonough | 48 | Head | Motorman | Canada English |
| 12 | Mathilda Mcdonough | 42 | Wife-H | — | Canada French |
| 13 | William Browder | 26 | Head | Job-Setter | Georgia |
| 14 | Madeline Browder | 20 | Wife-H | — | Michigan |
| 15 | Joseph Hinz | 56 | Head | Tailor | Germany |
| 16 | Nelly Hinz | 19 | Wife-H | — | Germany |
| 17 | Jacob G Harper | 70 | Head | Main Man | Canada English |
| 18 | Agnes Harper | 60 | Wife-H | — | Canada English |
| 19 | Earl Reed | 28 | Head | Abstractor | Ohio |
| 20 | Grace D Reed | 27 | Wife-H | — | Michigan |
| 21 | Shirley Jean Reed | 5 | Daughter | — | Michigan |
| 22 | Hollister M Philo | 17 | Step-son | — | New York |
| 23 | Marion Camp | 29 | Lodger | Accountant | Georgia |
| 24 | Florence L Baldus | 32 | Lodger | Secretary | Canada English |
| 25 | Mary Barry | 63 | Head-H | — | Canada English |
| 26 | Lyle Ladd | 35 | Head | Conductor | Ohio |
| 27 | Edna E Ladd | 35 | Wife | Proof-Reader | Pennsylvania |
| 28 | Richard W Ladd | 10 | Son | — | Michigan |
| 29 | Robert B Ladd | 8 | Son | — | Michigan |
| 30 | Eleanor J Ladd | 4 | Daughter | — | Michigan |
| 31 | Clara J Whitlock | 59 | Mother-in-law | — | Pennsylvania |
| 32 | Charles L Higbie | 28 | Head | Asst. Order | Indiana |
| 33 | Roy D Higbie | 23 | Brother | Baggage Man | Indiana |
| 34 | John J Headrick | 26 | Head | Job-Setter | Pennsylvania |
| 35 | Bessie E Headrick | 19 | Wife-H | — | Pennsylvania |
| 36 | Lawrence Carlton | 32 | Head | Crankshaft Grinder | Tennessee |
| 37 | Christine Carlton | 23 | Wife-H | — | Georgia |
| 38 | James T Fitzgerald | 32 | Head | Assembler | Irish Free State |
| 39 | Margaret Fitzgerald | 27 | Wife-H | — | Irish Free State |
| 40 | James Fitzgerald | 2 | Son | — | Michigan |
| 41 | Donald Fitzgerald | 0 | Son | — | Michigan |
| 42 | Nora Barry | 51 | Head-H | — | Michigan |
| 43 | Gerald M Barry | 25 | Son | Salesman | Michigan |
| 44 | Leo Barry | 26 | Head | Auto Mechanic | Michigan |
| 45 | Gertrude Barry | 19 | Wife-H | — | Michigan |
| 46 | George F Blair | 41 | Head | Book-Keeper | Michigan |
| 47 | Kathleen Blair | 33 | Wife-H | — | Michigan |
| 48 | Mary Lou Blair THIS PERSON | 16 | Daughter | — | Michigan |
| 49 | Rosemary Blair | 14 | Daughter | — | Michigan |
| 50 | George F Blair | 5 | Son | — | Michigan |
Pedigree Summary
Mary + 2 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)