MR
Mary Robbins — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Mary Robbins across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents Jackson & Helene — first a daughter (b.~1914), then head of a 5-person household.
Age 26
b. ~1914
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Robbins |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | Clerk in Office |
| Industry | Wholesale Jewelry Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 880 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Clerk In Office |
| Township / Ward | Indianapolis |
| 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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Jackson Robbins | Head | — | 48 | ~1892 |
| Mary Robbins | Daughter | — | 26 | ~1914 |
| Sarah Robbins | Daughter | — | 24 | ~1916 |
| Helene Robbins | Spouse | — | 50 | ~1890 |
| Eva Matthews | Other | — | 71 | ~1869 |
Census Appearances
1920
Marion, Indiana
Daughter, age 6
Marion, Indiana · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Robbins |
| Given Name | Mary Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| 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 16
Marion, Indiana · implied b. ~1914 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Robbins |
| Given Name | Mary M. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Daughter, age 26
Marion-County, Indiana · implied b. ~1914 — 5 household members
| Surname | Robbins |
| Given Name | Mary M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Occupation | Clerk in Office |
| Industry | Wholesale Jewelry Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 880 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| 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 Robbins across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Jackson Robbins (~0.92 confidence) and mother Helene Robbins (~0.92 confidence) and mother Helene Robbins (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Jackson Robbins
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Helene Robbins
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Helene Robbins
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Robbins
Daughter · 1940 · age 26 · b. ~1914 · Indiana
★ You are viewing this record
Sibling
Sarah Robbins
Sibling · 1940 · age 24
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 — Marion-County, Indiana
Open full size
1940 US Federal Census — Marion-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01126-00219)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | J. Francis De Day | 31 | Head | Manager | Illinois |
| 42 | Louise De Day | 28 | Wife | — | Indiana |
| 43 | Philip De Day | 5 | Son | — | Indiana |
| 44 | Elizabeth Raish | 45 | Head | Baker | Indiana |
| 45 | Dorothy Raish | 22 | Daughter | Stenographer | Indiana |
| 46 | Jack Raish | 11 | Son | — | Indiana |
| 47 | Jackson A. Robbins | 48 | Head | Ornamental Iron Worker | Indiana |
| 48 | Helene C. Robbins | 50 | Wife | — | Indiana |
| 49 | Mary M. Robbins THIS PERSON | 26 | Daughter | Clerk In Office | Indiana |
| 50 | Sarah J. Robbins | 24 | Daughter | Saleslady | Indiana |
| 51 | Eva D. Matthews | 71 | Mother-in-law | — | Indiana |
| 52 | Chase D. O'Harrow | 53 | Head | Salesman | Indiana |
| 53 | Stella O'Harrow | 51 | Wife | — | Indiana |
| 54 | James Parks | 26 | Lodger | Research Worker | Indiana |
| 55 | Edward J. Kirkhoff | 38 | Head | Steam Fitter | Indiana |
| 56 | Rose Kirkhoff | 36 | Wife | — | Indiana |
| 57 | Robert E. Kirkhoff | 5 | Son | — | Indiana |
| 58 | Joan Kirkhoff | 0 | Daughter | — | Indiana |
| 59 | Edwin H. Seay | 46 | Head | Inspector | Indiana |
| 60 | Mary A. Seay | 44 | Wife | — | Indiana |
| 61 | Patricia M. Seay | 18 | Daughter | Stenographer | Indiana |
| 62 | Robert U. Seay | 10 | Son | — | Indiana |
| 63 | Ella Brooks | 70 | Mother-in-law | — | Indiana |
| 64 | Patrick T. Kelly | 43 | Head | Mechanical Draftsman | Indiana |
| 65 | Agnes G. Kelly | 42 | Wife | — | Indiana |
| 66 | Mary P. Kelly | 10 | Daughter | — | Indiana |
| 67 | Robert Neater | 27 | Head | City Salesman | Ohio |
| 68 | Thelma Neater | 25 | Wife | — | Indiana |
| 69 | Betty Lou Neater | 3 | Daughter | — | Indiana |
| 70 | Sally Ann Neater | 1 | Daughter | — | Indiana |
| 71 | Homer E. Reeves | 66 | Head | Electrician | Indiana |
| 72 | Mary Reeves | 68 | Wife | — | Indiana |
| 73 | Mary E. Reeves | 30 | Daughter | Office Clerk | Indiana |
| 74 | Frank C. Mccalley | 47 | Head | Printer | Indiana |
| 75 | Magdalene Mccalley | 47 | Wife | — | Indiana |
| 76 | Francis C. Mccalley | 25 | Son | Stock Clerk Assistant | Indiana |
| 77 | William E. Mccalley | 23 | Son | Cable Splicer | Indiana |
| 78 | Richard E. Mccalley | 16 | Son | — | Indiana |
| 79 | Nancy J. Mccalley | 12 | Daughter | — | Indiana |
| 80 | Albert E. Callahan | 38 | Head | Elevator Operator | Indiana |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)