MS
Mary Sullivan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Montgomery-County, Ohio
Our Model Tree links this Mary Sullivan across the 1920, 1930 and 1940 US Censuses in Montgomery-County, Ohio (XGBoost, ~Confirmed), with identified parents Burney & Barney — first a daughter (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Ohio |
| Surname | Sullivan |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Dayton |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Occupation | Seamstress |
| Industry | NYA Project |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 149 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Seamstress |
| Township / Ward | Dayton |
| Est. Birth Year | ~1919 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Sullivan | Daughter | — | 21 | ~1919 |
| Joann Sullivan | Daughter | — | 10 | ~1930 |
| Audrey Sullivan | Daughter | — | 16 | ~1924 |
| Burney Sullivan | Head | — | 56 | ~1884 |
| William Sullivan | Son | — | 18 | ~1922 |
| Maud Sullivan | Spouse | — | 51 | ~1889 |
Census Appearances
1920
Montgomery, Ohio
Daughter, age 2
Montgomery, Ohio · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Ohio |
| Can Read | No |
| Can Write | No |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Montgomery, Ohio
Daughter, age 12
Montgomery, Ohio · implied b. ~1918 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Montgomery-County, Ohio
Daughter, age 21
Montgomery-County, Ohio · implied b. ~1919 — 6 household members
| Surname | Sullivan |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Dayton |
| 1935 Residence (County) | Montgomery |
| Occupation | Seamstress |
| Industry | NYA Project |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 149 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Sullivan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Burney Sullivan (~0.92 confidence) and father Barney Sullivan (~0.92 confidence) and mother Maud Sullivan (~0.92 confidence) and mother Maud Sullivan (~0.92 confidence) and mother Mollie Sullivan (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Burney Sullivan
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Barney Sullivan
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Maud Sullivan
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Maud Sullivan
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Mollie Sullivan
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Sullivan
Daughter · 1940 · age 21 · b. ~1919 · Ohio
★ You are viewing this record
Sibling
Audrey Sullivan
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joann Sullivan
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Sullivan
Sibling · 1940 · age 18
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 — Montgomery-County, Ohio
Open full size
1940 US Federal Census — Montgomery-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03256-00852)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Adeline Mariscalco | 9 | Daughter | — | Ohio |
| 42 | Gaetana Mariscalco | 7 | Son | — | Ohio |
| 43 | Guy Di Vitale | 51 | Head | Vegetable Man | Italy |
| 44 | Louis Di Vitale | 42 | Wife | — | Italy |
| 45 | Catherine Di Vitale | 18 | Daughter | New Worker | Ohio |
| 46 | Guinna Di Vitale | 17 | Daughter | New Worker | Ohio |
| 47 | Steven Di Vitale | 15 | Son | — | Ohio |
| 48 | Mary Ann Di Vitale | 14 | Daughter | — | Ohio |
| 49 | Santina Di Vitale | 12 | Daughter | — | Ohio |
| 50 | Nicholas Di Vitale | 10 | Son | — | Ohio |
| 51 | Louise Di Vitale | 7 | Daughter | — | Ohio |
| 52 | Efford A Mccoy | 49 | Head | Fruit Salesman | Ohio |
| 53 | Floyd Mccoy | 21 | Son | Fruit Salesman | Ohio |
| 54 | Mabel Snyder | 32 | Housekeeper | Housekeeper | Ohio |
| 55 | Canal Lee Snyder | 13 | Son | — | Ohio |
| 56 | Rosemary Snyder | 7 | Daughter | — | Ohio |
| 57 | Basil Ford | 45 | Head | Laborer | Ohio |
| 58 | Mary Ford | 26 | Wife | — | Ohio |
| 59 | George Rollans | 11 | Step-son | — | Ohio |
| 60 | Ralph Wade | 28 | Head | Bar Tender | Ohio |
| 61 | Margaret Wade | 27 | Wife | — | Ohio |
| 62 | Virginia Wade | 9 | Daughter | — | Ohio |
| 63 | Ollie Wade | 7 | Son | — | Ohio |
| 64 | Elvin Wade | 5 | Son | — | Ohio |
| 65 | Harold Wade | 4 | Son | — | Ohio |
| 66 | Ilene Wade | 2 | Daughter | — | Ohio |
| 67 | Burney Sullivan | 56 | Head | Laborer | Indiana |
| 68 | Maud Sullivan | 51 | Wife | — | Ohio |
| 69 | Mary Jane Sullivan THIS PERSON | 21 | Daughter | Seamstress | Ohio |
| 70 | William H Sullivan | 18 | Son | — | Ohio |
| 71 | Audrey Mae Sullivan | 16 | Daughter | — | Ohio |
| 72 | Joann Sullivan | 10 | Daughter | — | Ohio |
| 73 | Mary B Kissling | 73 | Head | — | Ohio |
| 74 | Frank Kissling | 76 | Brother | — | Ohio |
| 75 | Grace Bower | 58 | Head | — | Ohio |
| 76 | Millard Rash | 27 | Head | Cooler | Kentucky |
| 77 | Nettie Rash | 27 | Wife | — | Kentucky |
| 78 | Betty Rash | 2 | Daughter | — | Ohio |
| 79 | Donald Rash | 4 | Son | — | Ohio |
| 80 | Joseph Anhood | 56 | Head | — | Ohio |
Pedigree Summary
Mary + 3 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 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)