MS
Mary Sullivan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Le-Sueur-County, Minnesota
Our Model Tree links this Mary Sullivan across the 1920, 1930 and 1940 US Censuses in Le-Sueur-County, Minnesota (XGBoost, ~Confirmed) — first a spouse (b.~1881), then head of a 7-person household.
Age 59
b. ~1881
Female
Spouse
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Le-Sueur-County, Minnesota |
| Surname | Sullivan |
| Given Name | Mary A. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Derrynane Twp. |
| 1935 Residence (County) | Le Sueur |
| Additional Details | |
| Industry | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Derrynane Twp |
| Est. Birth Year | ~1881 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Lee | Daughter | — | 19 | ~1921 |
| Bernice Bergan | Daughter | — | 26 | ~1914 |
| Eugene Sullivan | Head | — | 62 | ~1878 |
| Leo Lee | Other | — | 23 | ~1917 |
| Mary Lee | Other | — | 4 | ~1936 |
| Otto Bergan | Other | — | 36 | ~1904 |
| Mary Sullivan | Spouse | — | 59 | ~1881 |
Census Appearances
1920
Le Sueur, …
Spouse, age 39
Le Sueur, Minnesota · implied b. ~1881 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Virginia |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Le Sueur, …
Spouse, age 49
Le Sueur, Minnesota · implied b. ~1881 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 27 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Virginia |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Le-Sueur-County, Minnesota
Spouse, age 59
Le-Sueur-County, Minnesota · implied b. ~1881 — 7 household members
| Surname | Sullivan |
| Given Name | Mary A. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Derrynane Twp. |
| 1935 Residence (County) | Le Sueur |
| Industry | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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.
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This person
Anchor record
Mary Sullivan
Spouse · 1940 · age 59 · b. ~1881 · Minnesota
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Le-Sueur-County, Minnesota
Open full size
1940 US Federal Census — Le-Sueur-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01933-00054)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jerry Hanlon | 53 | Head | Farmer | Minnesota |
| 2 | Margaret Hanlon | 54 | wife | — | Minnesota |
| 3 | Jerry L. Hanlon | 14 | son | 0 | Minnesota |
| 4 | William Shank | 40 | hired man | Farm Laborer | Minnesota |
| 5 | John Alton | 92 | father in law | — | Irish Free State |
| 6 | Daniel Sullivan | 51 | Head | Farmer | Minnesota |
| 7 | Ellen Sullivan | 52 | wife | — | Minnesota |
| 8 | Eugene Sullivan | 62 | Head | Farmer | Minnesota |
| 9 | Mary A. Sullivan THIS PERSON | 59 | wife | — | Minnesota |
| 10 | Leo Lee | 23 | son in law | Farm Laborer | Minnesota |
| 11 | Margaret Lee | 19 | daughter | — | Minnesota |
| 12 | Mary K. Lee | 4 | grand daughter | — | Minnesota |
| 13 | Otto Bergan | 36 | son in law | Hoist Operator | North Dakota |
| 14 | Bernice Bergan | 26 | daughter | — | Minnesota |
| 15 | J. R. Donovan | 41 | Head | Farmer | Minnesota |
| 16 | Theresa Donovan | 41 | wife | — | Minnesota |
| 17 | Francis Donovan | 17 | son | Farm Laborer | Minnesota |
| 18 | George Donovan | 15 | son | 0 | Minnesota |
| 19 | M. H. Fogarty | 25 | Head | Farmer | Minnesota |
| 20 | Edna Fogarty | 24 | wife | — | Minnesota |
| 21 | Thomas Kelly | 19 | brother in law | Laborer | Minnesota |
| 22 | James C. Brown | 50 | Head | Farmer | Minnesota |
| 23 | Cecelia Brown | 53 | wife | — | Minnesota |
| 24 | Sylvester Brown | 21 | son | Farm Laborer | Minnesota |
| 25 | Dennis Halloran | 38 | Head | Farmer | Minnesota |
| 26 | Esther Halloran | 35 | wife | — | Minnesota |
| 27 | Colleen Halloran | 1 | daughter | — | Minnesota |
| 28 | Leo Halloran | 34 | brother | Farmer | Minnesota |
| 29 | Frank Meyer | 33 | Head | Laborer | Minnesota |
| 30 | Adeline Meyer | 27 | wife | — | Minnesota |
| 31 | Georgia Mae Meyer | 6 | daughter | — | Minnesota |
| 32 | Patricia Meyer | 4 | daughter | — | Minnesota |
| 33 | James Connelly | 43 | Head | Farmer | Minnesota |
| 34 | Mary Connelly | 37 | wife | — | Minnesota |
| 35 | Joyce Connelly | 15 | daughter | — | Minnesota |
| 36 | James Jr. Connelly | 13 | son | — | Minnesota |
| 37 | Alan Connelly | 12 | son | — | Minnesota |
| 38 | Richard Connelly | 10 | son | — | Minnesota |
| 39 | Duane Connelly | 8 | son | — | Minnesota |
| 40 | Robert Connelly | 5 | son | — | Minnesota |
Related Census Records
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)