KS
Katherine Sullivan — 1920 US Census Record
Model Tree available1920 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this Katherine Sullivan across the 1910, 1920 and 1930 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed), with identified parents Peter & Peter — first a daughter (b.~1907), then head of a 5-person household.
Age 13
b. ~1907
Female
Daughter
Born: Pennsylvania
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Allegheny, Pennsylvania |
| Surname | Sullivan |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1907 |
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 1920 census.
| Name | Relation to head | Relative to Katherine | Age | Birth yr |
|---|---|---|---|---|
| Katherine Sullivan | Daughter | — | 13 | ~1907 |
| Elizabeth Sullivan | Spouse | — | 45 | ~1875 |
| John Sullivan | Son | — | 15 | ~1905 |
| Peter Sullivan | Head | — | 46 | ~1874 |
| Mildred Sullivan | Daughter | — | 8 | ~1912 |
Census Appearances
1910
Allegheny, Pennsylvania
Daughter, age 1
Allegheny, Pennsylvania · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Katherine A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Allegheny, Pennsylvania
Daughter, age 13
Allegheny, Pennsylvania · implied b. ~1907 — 5 household members
| Surname | Sullivan |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| 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 24
Allegheny, Pennsylvania · implied b. ~1906 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Kathryn |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| 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 |
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 3 US Census years (1910, 1920 and 1930) in Allegheny, Pennsylvania, using XGBoost record linkage. Identified parents: father Peter Sullivan (~0.92 confidence) and father Peter Sullivan (~0.92 confidence) and father Thomas Sullivan (~0.92 confidence) and mother Elizabeth Sullivan (~0.92 confidence) and mother Mary Sullivan (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Peter Sullivan
b. ~1874
Source father
● Household
· direct · ~0.92
Father
Peter Sullivan
b. ~1875
Source father
● Household
· direct · ~0.92
Father
Thomas Sullivan
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Elizabeth Sullivan
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Mary Sullivan
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Katherine Sullivan
Daughter · 1920 · age 13 · b. ~1907 · Pennsylvania
★ You are viewing this record
Sibling
John Sullivan
Sibling · 1920 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Sullivan
Sibling · 1920 · age 8
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
1920 US Federal Census — Allegheny, Pennsylvania
Open full size
1920 US Federal Census — Allegheny, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1517unit:0767)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bell Maitland | 45 | Head | — | Pennsylvania |
| 2 | Catherine L. Maitland | 22 | Daughter | Stenographer | Pennsylvania |
| 3 | Violet Maitland | 19 | Daughter | Stenographer | Pennsylvania |
| 4 | Peter J. Sullivan | 46 | Head | Owner | Pennsylvania |
| 5 | Elizabeth Sullivan | 45 | Wife | — | Pennsylvania |
| 6 | John Sullivan | 15 | Son | — | Pennsylvania |
| 7 | Katherine Sullivan THIS PERSON | 13 | Daughter | — | Pennsylvania |
| 8 | Mildred Sullivan | 8 | Daughter | — | Pennsylvania |
| 9 | George Ariel | 53 | Head | Florist | Pennsylvania |
| 10 | Catherine Ariel | 51 | Wife | — | Pennsylvania |
| 11 | Richard Ariel | 47 | Brother-in-law | Clerk Office | Pennsylvania |
| 12 | William Ariel | 44 | Brother-in-law | Stenographer | Pennsylvania |
| 13 | Michael M. Ariel | 41 | Brother-in-law | Salesman | Pennsylvania |
| 14 | Sarah Ariel | 39 | Sister-in-law | — | Pennsylvania |
| 15 | Goldie Goldstein | 52 | Head | — | Russia |
| 16 | Max G. Goldstein | 31 | Son-in-law | Chemist | Pennsylvania |
| 17 | Dorothy Goldstein | 21 | Daughter | — | Pennsylvania |
| 18 | Helen H. Miller | 33 | Head | Asst. Superintendent | Ohio |
| 19 | Jessie G. Miller | 31 | Wife | — | Ohio |
| 20 | George G. Selby | 26 | Lodger | Salesman | Ohio |
| 21 | Pearl A. Selby | 24 | Lodger | — | Illinois |
| 22 | Rudolph Knopf | 45 | Head | Stenographer | Pennsylvania |
| 23 | Elizabeth Knopf | 60 | Boarder | Stenographer | Pennsylvania |
| 24 | Herbert A. White | 33 | Head | Teacher | Ohio |
| 25 | Eva White | 27 | Wife | — | Connecticut |
| 26 | William J. Thomas | 61 | Boarder | Slipman | Wales |
| 27 | Sarah Thomas | 46 | Wife | — | New York |
| 28 | William Bingler | 23 | Head | Salesman | Pennsylvania |
| 29 | Vera Bingler | 22 | Wife | — | Pennsylvania |
| 30 | Bill Bingler | 1 | Son | — | Pennsylvania |
| 31 | Edward R. Deming | 32 | Head | Engineer | Washington |
| 32 | Catherine Deming | 28 | Wife | — | Pennsylvania |
| 33 | William H. Willey | 29 | Head | Asst. Manager | District of Columbia |
| 34 | Julia Willey | 25 | Wife | — | Ohio |
| 35 | Jacob Pereira | 31 | Head | Salesman | Illinois |
| 36 | Amelia Pereira | 35 | Wife | — | Germany |
| 37 | Carmelle Mayer | 34 | Head | Photographer | Alsace-Lorraine |
| 38 | Rose Mayer | 34 | Wife | — | Missouri |
| 39 | James L. Mayer | 9 | Son | — | Illinois |
| 40 | Charles O. Dent | 53 | Head | Clerk | Pennsylvania |
| 41 | Annie B. Dent | 50 | Wife | — | Pennsylvania |
| 42 | Carl Dent | 23 | Son | Clerk | Pennsylvania |
| 43 | Flait Brown | 29 | Boarder | Manager | New York |
| 44 | Rose G. Brown | 27 | Wife | — | Pennsylvania |
| 45 | Marcia Brown | 1 | Daughter | — | Pennsylvania |
| 46 | Joseph H. Bialas | 37 | Head | Attorney | Pennsylvania |
| 47 | Alice Bialas | 34 | Wife | — | Massachusetts |
| 48 | Catherine P. Bialas | 61 | Mother | — | Pennsylvania |
| 49 | Joseph P. Larkin | 48 | Head | Clerk | Pennsylvania |
| 50 | Annie Larkin | 47 | Wife | — | Pennsylvania |
Pedigree Summary
Katherine + 2 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 1920 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)