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Mary Baldwin — 1930 US Census Record
Model Tree available1930 United States Federal Census · Marion, Indiana
Our Model Tree links this Mary Baldwin across the 1920, 1930 and 1940 US Censuses in Marion, Indiana (XGBoost, ~Confirmed), with identified parents M & William — first a daughter (b.~1920), then head of a 6-person household.
Age 10
b. ~1920
Female
Daughter
Born: Indiana
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Marion, Indiana |
| Surname | Baldwin |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Indianapolis City |
| Est. Birth Year | ~1920 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Baldwin | Daughter | — | 10 | ~1920 |
| William Baldwin | Head | — | 43 | ~1887 |
| William Baldwin | Son | — | 16 | ~1914 |
| Robert Baldwin | Son | — | 8 | ~1922 |
| Virgil Baldwin | Son | — | 14 | ~1916 |
| Purnila Baldwin | Spouse | — | 39 | ~1891 |
Census Appearances
1920
Marion, Indiana
Daughter, age
Marion, Indiana · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baldwin |
| Given Name | Mary J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Daughter, age 10
Marion, Indiana · implied b. ~1920 — 6 household members
| Surname | Baldwin |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Daughter, age 21
Marion-County, Indiana · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baldwin |
| Given Name | Marjorie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Occupation | Waitress |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 780 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Baldwin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother M Baldwin (~0.83 confidence) and father William Baldwin (~0.83 confidence) and father William Baldwin (~0.92 confidence) and mother Purnila Baldwin (~0.92 confidence). The pedigree spans 2 generations with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.88
Mother
M Baldwin
b. ~1855
Source father>mother
● Household
· direct · ~0.83
Father
William Baldwin
b. ~1856
Source father>father
● Household
· direct · ~0.83
Father
William Baldwin
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Purnila Baldwin
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Baldwin
Daughter · 1930 · age 10 · b. ~1920 · Indiana
★ You are viewing this record
Sibling
William Baldwin
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virgil Baldwin
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Baldwin
Sibling · 1930 · age 8
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 — Marion, Indiana
Open full size
1930 US Federal Census — Marion, Indiana
Page Contents
50 people indexed on this census page (ia:1930:indianacensus00reel613:0325)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Roy Reel | 42 | Head | Machinist | Indiana |
| 2 | Mabel Reel | 40 | Wife | — | Indiana |
| 3 | Raymond Reel | 16 | Son | — | Indiana |
| 4 | Lawrence Reel | 14 | Son | — | Indiana |
| 5 | Frank Agar | 53 | Head | Section Hand | Ohio |
| 6 | Lena Agar | 33 | Wife | — | Indiana |
| 7 | William F. Baldwin | 43 | Head | Machinist | Indiana |
| 8 | Purnila F. Baldwin | 39 | Wife | — | Indiana |
| 9 | William H. Baldwin | 16 | Son | — | Indiana |
| 10 | Virgil F. Baldwin | 14 | Son | — | Indiana |
| 11 | Mary L. Baldwin THIS PERSON | 10 | Daughter | — | Indiana |
| 12 | Robert G. Baldwin | 8 | Son | — | Indiana |
| 13 | Mobley Cooper | 40 | Head | Upholsterer | Indiana |
| 14 | Gladys Cooper | 34 | Wife | — | Indiana |
| 15 | Roy S. Cooper | 18 | Son | — | Indiana |
| 16 | Annabelle Cooper | 16 | Daughter | — | Indiana |
| 17 | Elsie Cooper | 5 | Daughter | — | Indiana |
| 18 | James Dobbs | 52 | Head | Laborer | Tennessee |
| 19 | Anna Dobbs | 35 | Wife | — | Tennessee |
| 20 | Eva Dobbs | 14 | Daughter | — | Tennessee |
| 21 | E. Lou Dobbs | 11 | Son | — | Tennessee |
| 22 | Dee J. Browning | 71 | Head | — | Kentucky |
| 23 | Cecil Browning | 33 | Son | Mechanic | Kentucky |
| 24 | Martin Chastain | 30 | Head | Chauffeur | Indiana |
| 25 | Madalina Chastain | 26 | Wife | — | Indiana |
| 26 | Martha L. Chastain | 3 | Daughter | — | Indiana |
| 27 | John Chastain | 1 | Son | — | Indiana |
| 28 | Louis Pense | 30 | Head | Salesman | Indiana |
| 29 | Maude Pense | 30 | Wife | — | Indiana |
| 30 | Charles Pense | 3 | Son | — | Indiana |
| 31 | Ford F. Garrett | 28 | Head | Brakeman | Indiana |
| 32 | Dorothy Garrett | 26 | Wife | — | Ohio |
| 33 | Richard Garrett | 6 | Son | — | Indiana |
| 34 | Mary L. Garrett | 4 | Daughter | — | Indiana |
| 35 | Robert Garrett | 1 | Son | — | Indiana |
| 36 | Ralph Garrett | 20 | Brother | Porter | Indiana |
| 37 | Michael Krempl | 46 | Head | Cabinet Maker | Germany |
| 38 | Ida M. Krempl | 56 | Wife | — | Illinois |
| 39 | Ray C. Fuller | 42 | Head | Agent | Indiana |
| 40 | Lizzie Fuller | 38 | Wife | — | Indiana |
| 41 | T. J. Harp | 54 | Head | Inspector | Indiana |
| 42 | Florence Harp | 54 | Wife | — | Indiana |
| 43 | C. W. Snider | 42 | Head | Policeman | Indiana |
| 44 | Rose Snider | 45 | Wife | — | Indiana |
| 45 | Clement Queen | 23 | Head | Carpenter | Indiana |
| 46 | Mary Queen | 22 | Wife | — | Indiana |
| 47 | Marjorie L. Queen | 1 | Daughter | — | Indiana |
| 48 | Sam Evans | 46 | Head | Laborer | Indiana |
| 49 | Katie Evans | 33 | Wife | — | Ohio |
| 50 | Helen Evans | 19 | Daughter | — | Indiana |
Related Census Records
Pedigree Summary
Mary + 3 siblings
Gen 1 · 2 parents
~0.92
Gen 2 · 2 grandparents
~0.82
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)