DS
Dorothy Sullivan — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this Dorothy Sullivan across the 1930 and 1940 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 10-person household.
Age 10
b. ~1920
Female
Daughter
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Allegheny, Pennsylvania |
| Surname | Sullivan |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1920 |
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 1930 census.
| Name | Relation to head | Relative to Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Regina Sullivan | Daughter | — | 8 | ~1922 |
| Marie Sullivan | Daughter | — | 23 | ~1907 |
| James Sullivan | Son | — | 15 | ~1915 |
| Gertrude Sullivan | Daughter | — | 12 | ~1918 |
| Elizabeth Sullivan | Daughter | — | 5 | ~1925 |
| Dorothy Sullivan | Daughter | — | 10 | ~1920 |
| Patrick Sullivan | Head | — | 52 | ~1878 |
| William Sullivan | Son | — | 21 | ~1909 |
| Catherine Sullivan | Spouse | — | 49 | ~1881 |
| Joseph Sullivan | Son | — | 9 | ~1921 |
Census Appearances
1930
Allegheny, Pennsylvania
Daughter, age 10
Allegheny, Pennsylvania · implied b. ~1920 — 10 household members
| Surname | Sullivan |
| Given Name | Dorothy |
| 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/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 20
Allegheny-County, Pennsylvania · implied b. ~1920 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Dorthy |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Occupation | new worker |
| Hours Worked | 156 |
| 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 Dorothy Sullivan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Dorothy Sullivan
Daughter · 1930 · age 10 · b. ~1920 · Pennsylvania
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Sibling
Joseph Sullivan
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marie Sullivan
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Sullivan
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Regina Sullivan
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Sullivan
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Sullivan
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude Sullivan
Sibling · 1930 · age 12
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
1930 US Federal Census — Allegheny, Pennsylvania
Open full size
1930 US Federal Census — Allegheny, Pennsylvania
Page Contents
29 people indexed on this census page (ia:1930:fifteenthcensus00reel1974:1053)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Minnie Kilpatrick | 55 | Head | Matron | Kansas |
| 2 | Muma Kilpatrick | 52 | Sister | — | Scotland |
| 3 | Harry Mcfarlane | 54 | Lodger | Shipper | Northern Ireland |
| 4 | Ida M. Buxton | 41 | Lodger | Nurse | England |
| 5 | Patrick Sullivan | 52 | Head | Laborer | Pennsylvania |
| 6 | Catherine Sullivan | 49 | Wife | — | Pennsylvania |
| 7 | William Sullivan | 21 | Son | Repairman | Pennsylvania |
| 8 | James Sullivan | 15 | Son | — | Pennsylvania |
| 9 | Joseph Sullivan | 9 | Son | — | Pennsylvania |
| 10 | Marie Sullivan | 23 | Daughter | Bookkeeper | Pennsylvania |
| 11 | Gertrude Sullivan | 12 | Daughter | — | Pennsylvania |
| 12 | Dorothy Sullivan THIS PERSON | 10 | Daughter | — | Pennsylvania |
| 13 | Regina Sullivan | 8 | Daughter | — | Pennsylvania |
| 14 | Elizabeth Sullivan | 5 | Daughter | — | Pennsylvania |
| 15 | Bella D. Lyons | 60 | Head | — | Pennsylvania |
| 16 | Edward Swartz | 55 | Husband | Laborer | Ohio |
| 17 | Marie Swartz | 46 | Wife | — | Pennsylvania |
| 18 | Melvin Davis | 33 | Husband | Welder | Pennsylvania |
| 19 | Clara Davis | 26 | Wife | — | Pennsylvania |
| 20 | Melvin Jr. Davis | 8 | Son | — | Pennsylvania |
| 21 | John Stoor | 32 | Husband | Draftsman | Ohio |
| 22 | May Stoor | 32 | Wife | — | Pennsylvania |
| 23 | Minnie Handlon | 70 | Head | Charwoman | Pennsylvania |
| 24 | Agnes Handlon | 25 | Daughter | Operator | Pennsylvania |
| 25 | Fred Ross | 29 | Husband | Laborer | Pennsylvania |
| 26 | Mary Ross | 23 | Wife | — | Pennsylvania |
| 27 | Harry Ross | 26 | Husband | Laborer | Pennsylvania |
| 28 | Hallie Ross | 27 | Wife | — | Pennsylvania |
| 29 | Harry Jr. Ross | 4 | Son | — | Pennsylvania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)