MS
Margaret Sullivan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Margaret Sullivan across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Thomas & Bertha — first a spouse (b.~1909), then head of a 5-person household.
Age 31
b. ~1909
Female
Spouse
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Sullivan |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1909 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Helen Sullivan | Daughter | — | ~1940 | |
| Carol Sullivan | Daughter | — | 4 | ~1936 |
| Eugene Sullivan | Head | — | 33 | ~1907 |
| Michael Sullivan | Son | — | 2 | ~1938 |
| Margaret Sullivan | Spouse | — | 31 | ~1909 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age 10
Allegheny, Pennsylvania · implied b. ~1910 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 20
Allegheny, Pennsylvania · implied b. ~1910 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Car Cleaner |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Spouse, age 31
Allegheny-County, Pennsylvania · implied b. ~1909 — 5 household members
| Surname | Sullivan |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Margaret Sullivan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Sullivan (~0.92 confidence) and mother Bertha Sullivan (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Sullivan
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Bertha Sullivan
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Sullivan
Spouse · 1940 · age 31 · b. ~1909 · Pennsylvania
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03652-00340)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Plucci | 51 | Head | — | Pennsylvania |
| 2 | Frances Plucci | 23 | Daughter | New Worker | Pennsylvania |
| 3 | Joseph J. Fritz | 54 | Head | Teamster | Pennsylvania |
| 4 | Mary Fritz | 49 | Wife | — | Pennsylvania |
| 5 | Stanley P. Sanders | 43 | Head | Laborer | Pennsylvania |
| 6 | Mary Sanders | 41 | Wife | — | Pennsylvania |
| 7 | James R. Sanders | 16 | Son | — | Pennsylvania |
| 8 | Robert Sanders | 7 | Son | — | Pennsylvania |
| 9 | Chester Walters | 26 | Head | Service Manager | West Virginia |
| 10 | Elsie Walters | 22 | Wife | — | Pennsylvania |
| 11 | Eugene C. Walters | 4 | Son | — | Pennsylvania |
| 12 | Emma Hobos | 18 | Lodger | Maid | Pennsylvania |
| 13 | Eugene Sullivan | 33 | Head | Fireman | Pennsylvania |
| 14 | Margaret Sullivan THIS PERSON | 31 | Wife | — | Pennsylvania |
| 15 | Carol Sullivan | 4 | Daughter | — | Pennsylvania |
| 16 | Michael Sullivan | 2 | Son | — | Pennsylvania |
| 17 | Helen Sullivan | 0 | Daughter | — | Pennsylvania |
| 18 | Madeline Gerneth | 38 | Head | Film Inspector | Pennsylvania |
| 19 | John Gerneth | 19 | Son | Laborer | Pennsylvania |
| 20 | Hazel Gerneth | 14 | Daughter | — | Pennsylvania |
| 21 | Leo Obermeier | 49 | Head | Car Inspector | Pennsylvania |
| 22 | Stella Carslowski | 35 | Head | — | Pennsylvania |
| 23 | Stanley Carslowski | 33 | Brother | Laborer | Pennsylvania |
| 24 | Francis Carslowski | 31 | Brother | Laborer | Pennsylvania |
| 25 | Joseph Carslowski | 28 | Brother | Laborer | Pennsylvania |
| 26 | Raymond Carslowski | 28 | Brother | Laborer | Pennsylvania |
| 27 | William Todd | 38 | Head | Truck Driver | Ohio |
| 28 | Josephine Todd | 30 | Wife | — | Pennsylvania |
| 29 | Steven L. Visocky | 33 | Head | Laborer | Pennsylvania |
| 30 | Mary M. Visocky | 25 | Wife | — | Pennsylvania |
| 31 | Joanne Visocky | 1 | Daughter | — | Pennsylvania |
| 32 | Catherine Timko | 32 | Sister | Cashier | Pennsylvania |
| 33 | Jacqueline Timko | 9 | Daughter | — | Pennsylvania |
| 34 | Elizabeth Brophy | 61 | Head | Janitress | Pennsylvania |
| 35 | Harry J. Herbold | 57 | Head | Brakeman | Ohio |
| 36 | Bessie L. Herbold | 57 | Wife | — | Pennsylvania |
| 37 | Edith Blanding | 31 | Head | Proprietress | Pennsylvania |
| 38 | James Blanding | 11 | Son | — | New York |
| 39 | Joseph Gucaro | 57 | Lodger | Laborer | Italy |
| 40 | Angelo Dolce | 50 | Lodger | Cement Finisher | Italy |
Related Census Records
Pedigree Summary
Margaret
Gen 1 · 2 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)