KS
Katherine Sullivan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Worcester-County, Massachusetts
Our Model Tree links this Katherine Sullivan across the 1910, 1920, 1930 and 1940 US Censuses in Worcester-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Mary — first a daughter (b.~1884), then head of a 3-person household.
Age 56
b. ~1884
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Worcester-County, Massachusetts |
| Surname | Sullivan |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Worcester city |
| 1935 Residence (County) | Worcester |
| Additional Details | |
| Occupation | Brake Tender |
| Industry | Steel Mill |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1400 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Brake Tender |
| Township / Ward | Worcester City |
| Est. Birth Year | ~1884 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Katherine | Age | Birth yr |
|---|---|---|---|---|
| Mary Sullivan | Head | — | 71 | ~1869 |
| William Sullivan | Son | — | 46 | ~1894 |
| Katherine Sullivan | Daughter | — | 56 | ~1884 |
Census Appearances
1910
Worcester, Massachusetts
Other, age 25
Worcester, Massachusetts · implied b. ~1885 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Katherine |
| Relationship to Head | Inmate |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Worcester, Massachusetts
Other, age 34
Worcester, Massachusetts · implied b. ~1886 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Katherine |
| Relationship to Head | Patient |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Housework |
| Industry | Institution |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Worcester, Massachusetts
Other, age 45
Worcester, Massachusetts · implied b. ~1885 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Katherine |
| Relationship to Head | Patient |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Worcester-County, Massachusetts
Daughter, age 56
Worcester-County, Massachusetts · implied b. ~1884 — 3 household members
| Surname | Sullivan |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Worcester city |
| 1935 Residence (County) | Worcester |
| Occupation | Brake Tender |
| Industry | Steel Mill |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1400 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Katherine Sullivan across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Sullivan (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Sullivan
b. ~1869
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Katherine Sullivan
Daughter · 1940 · age 56 · b. ~1884 · Massachusetts
★ You are viewing this record
Sibling
William Sullivan
Sibling · 1940 · age 46
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 — Worcester-County, Massachusetts
Open full size
1940 US Federal Census — Worcester-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01717-00413)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George O'Leary | 32 | Head | Truck Driver | New York |
| 2 | Josephine O'Leary | 31 | Wife | — | Massachusetts |
| 3 | George O'Leary | 4 | Son | — | Massachusetts |
| 4 | Carol O'Leary | 2 | Daughter | — | Massachusetts |
| 5 | Daniel J. O'Leary | 57 | Head | Patrolman | Massachusetts |
| 6 | Jessie O'Leary | 49 | Wife | — | Massachusetts |
| 7 | Raymond O'Leary | 19 | Son | Car Washer | Massachusetts |
| 8 | Paul O'Leary | 14 | Son | — | Massachusetts |
| 9 | Daniel Jr. O'Leary | 11 | Son | — | Massachusetts |
| 10 | William Gleason | 32 | Head | Foreman | Massachusetts |
| 11 | Margaret Gleason | 34 | Wife | — | Canada-French |
| 12 | Ann Gleason | 9 | Daughter | — | Massachusetts |
| 13 | Howard Gleason | 1 | Daughter | — | Canada |
| 14 | Grace Gleason | 3 | Son | — | Massachusetts |
| 15 | David Metaberg | 27 | Head | Salesman | Massachusetts |
| 16 | Margaret Metaberg | 25 | Wife | — | Massachusetts |
| 17 | David Jr. Metaberg | 7 | Son | — | Massachusetts |
| 18 | Richard Metaberg | 4 | Son | — | Massachusetts |
| 19 | Wallace Metaberg | 1 | Son | — | Massachusetts |
| 20 | Mary Sullivan | 71 | Head | — | Massachusetts |
| 21 | Katherine Sullivan THIS PERSON | 56 | Daughter | Brake Tender | Massachusetts |
| 22 | William Sullivan | 46 | Son | Woodworker | Massachusetts |
| 23 | Augusta Williams | 64 | Head | — | Sweden |
| 24 | Marion E. Williams | 35 | Daughter | Card Worker | Massachusetts |
| 25 | Claire Williams | 16 | Daughter | — | Massachusetts |
| 26 | Mary Williams | 12 | Daughter | — | Massachusetts |
| 27 | Raymond Williams | 38 | Head | Woodworker | Massachusetts |
| 28 | Evelyn Williams | 36 | Wife | — | Massachusetts |
| 29 | Gene Williams | 2 | Son | — | Massachusetts |
| 30 | August Olson | 60 | Head | Smelter | Sweden |
| 31 | Sarah Olson | 62 | Wife | — | Sweden |
| 32 | Oscar Olson | 39 | Son | Washer | Massachusetts |
| 33 | Carl Olson | 44 | Head | Proprietor | Massachusetts |
| 34 | Alice Olson | 40 | Wife | — | Massachusetts |
| 35 | Edward Olson | 16 | Son | — | Massachusetts |
| 36 | Phyllis Olson | 14 | Daughter | — | Massachusetts |
| 37 | Shirley Olson | 12 | Daughter | — | Massachusetts |
| 38 | Kenneth Olson | 5 | Son | — | Massachusetts |
| 39 | Lloyd Olson | 2 | Son | — | Massachusetts |
| 40 | Herbert Blagrove | 25 | Head | Baker | Connecticut |
Pedigree Summary
Katherine + 1 sibling
Gen 1 · 1 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)