MC
Mary Connor — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Mary Connor across the 1910, 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents John & Kate — first a daughter (b.~1907), then head of a 10-person household.
Age 33
b. ~1907
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Connor |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | School teacher |
| Industry | Public school |
| Class of Worker | GW |
| Hours Worked | 35 |
| Income (1939) | 1100 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Teacher |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1907 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Connor | Daughter | — | 33 | ~1907 |
| Claire Connor | Daughter | — | 15 | ~1925 |
| Jane Connor | Daughter | — | 23 | ~1917 |
| Helen Connor | Daughter | — | 27 | ~1913 |
| Joan Connor | Daughter | — | 19 | ~1921 |
| David Connor | Head | — | 64 | ~1876 |
| Martin Logan | Other | — | 56 | ~1884 |
| John Connor | Son | — | 16 | ~1924 |
| David Connor | Son | — | 25 | ~1915 |
| Catherine Connor | Spouse | — | 55 | ~1885 |
Census Appearances
Daughter, age 3
Marion, Indiana · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Conner |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Speaks English | English |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1920
Marion, Indiana
Daughter, age 13
Marion, Indiana · implied b. ~1907 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connor |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Daughter, age 23
Marion, Indiana · implied b. ~1907 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Connor |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Daughter, age 33
Marion-County, Indiana · implied b. ~1907 — 10 household members
| Surname | Connor |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Occupation | School teacher |
| Industry | Public school |
| Class of Worker | GW |
| Hours Worked | 35 |
| Income (1939) | 1100 |
| 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 Connor across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Connor (~0.81 confidence) and mother Kate Connor (~0.81 confidence) and mother Mary Connor (~0.81 confidence) and father David Connor (~0.92 confidence) and father Michael Conner (~0.92 confidence) and father Michel Connor (~0.92 confidence) and mother Mary Connor (~0.92 confidence) and mother Mary Conner (~0.92 confidence) and mother Catherine Connor (~0.92 confidence). The pedigree spans 2 generations with 9 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.88
Father
John Connor
b. ~1838
Source father>father
● Household
· direct · ~0.81
Mother
Kate Connor
b. ~1842
Source father>mother
● Household
· direct · ~0.81
Mother
Mary Connor
b. ~1842
Source father>mother
● Household
· direct · ~0.81
Father
David Connor
b. ~1876
Source father
● Household
· direct · ~0.92
Father
Michael Conner
b. ~1879
Source father
● Household
· direct · ~0.92
Father
Michel Connor
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Mary Connor
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Mary Conner
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Catherine Connor
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Connor
Daughter · 1940 · age 33 · b. ~1907 · Indiana
★ You are viewing this record
Sibling
Joan Connor
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Claire Connor
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jane Connor
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Connor
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Connor
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Connor
Sibling · 1940 · age 16
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
39 people indexed on this census page (nara:1940:m-t0627-01131-00007)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William G. Davis | 36 | Head | Lawyer | Indiana |
| 2 | Dorothy G. Davis | 34 | Wife | — | Washington |
| 3 | William Jr. Davis | 8 | Son | — | Illinois |
| 4 | Elizabeth Davis | 2 | Daughter | — | Indiana |
| 5 | Alberta Braun | 18 | Maid | Maid | Indiana |
| 6 | Jessie Martin | 66 | Head | Attorney | Indiana |
| 7 | Mable Martin | 62 | Wife | — | Indiana |
| 8 | Halbert Meyer | 54 | Head | Branch Manager | Indiana |
| 9 | Ethyl D. Meyer | 52 | Wife | — | Indiana |
| 10 | Rush Denison | 79 | Father-in-law | Druggist | Indiana |
| 11 | Idabelle Denison | 71 | Mother-in-law | — | Illinois |
| 12 | Francis Smith | 62 | Head | Executive Secretary | Iowa |
| 13 | Inez B. Smith | 58 | Wife | — | Illinois |
| 14 | Emily Ruth Smith | 11 | Daughter | — | Indiana |
| 15 | Ella Stewart | 80 | Mother-in-law | — | Missouri |
| 17 | George Henry | 62 | Head | Salesman | Ohio |
| 18 | Louise Henry | 63 | Wife | — | Ohio |
| 19 | Gustav H. Donjus | 53 | Head | Salesman | Indiana |
| 20 | Gertrude Donjus | 48 | Wife | — | Indiana |
| 21 | Earl Jones | 41 | Lodger | Credit Man | Indiana |
| 22 | Gelston M. Henry | 62 | Head | Teaching | Michigan |
| 23 | Elizabeth M. Henry | 62 | Wife | — | Michigan |
| 24 | Enrice Kittredge | 90 | Mother-in-law | — | Michigan |
| 25 | Raymond F. Mead | 42 | Head | Secretary & Treasurer | Illinois |
| 26 | Margaret Mead | 39 | Wife | — | Indiana |
| 27 | David Mead | 8 | Son | — | Indiana |
| 28 | Allison Mead | 8 | Daughter | — | Indiana |
| 29 | Mitchell Mead | 6 | Son | — | Indiana |
| 30 | Elizabeth Wehrmeyer | 20 | Maid | Maid | Indiana |
| 31 | David J. Connor | 64 | Head | Pressman | Indiana |
| 32 | Catherine Connor | 55 | Wife | — | Louisiana |
| 33 | Mary Connor THIS PERSON | 33 | Daughter | School Teacher | Indiana |
| 34 | Helen Connor | 27 | Daughter | School Teacher | Indiana |
| 35 | David Jr. Connor | 25 | Son | Salesman | Indiana |
| 36 | Jane Connor | 23 | Daughter | Investigator | Indiana |
| 37 | Joan Connor | 19 | Daughter | — | Indiana |
| 38 | John Connor | 16 | Son | — | Indiana |
| 39 | Claire Connor | 15 | Daughter | — | Indiana |
| 40 | Martin Logan | 56 | Brother-in-law | Policeman | Louisiana |
Related Census Records
Pedigree Summary
Mary + 6 siblings
Gen 1 · 6 parents
~0.92
Gen 2 · 3 grandparents
~0.81
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)