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James Sullivan — 1920 US Census Record
Model Tree available1920 United States Federal Census · Cook, Illinois
Our Model Tree links this James Sullivan across the 1900, 1910 and 1920 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents Patrick & James — first a son (b.~1898), then head of a 3-person household.
Age 22
b. ~1898
Male
Son
Born: Illinois
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Cook, Illinois |
| Surname | Sullivan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Motorman |
| Industry | Street Railway |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Motorman |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1898 |
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 1920 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Julia Sullivan | Head | — | 48 | ~1872 |
| James Sullivan | Son | — | 22 | ~1898 |
| Thomas Sullivan | Son | — | 13 | ~1907 |
Census Appearances
1900
Cook, Illinois
Son, age 3
Cook, Illinois · implied b. ~1897 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Birth Month | Sept |
| Birth Year | 1897 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1910
Cook, Illinois
Son, age 12
Cook, Illinois · implied b. ~1898 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Son, age 22
Cook, Illinois · implied b. ~1898 — 3 household members
| Surname | Sullivan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Motorman |
| Industry | Street Railway |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 James Sullivan across 3 US Census years (1900, 1910 and 1920) in Cook, Illinois, using XGBoost record linkage. Identified parents: father Patrick Sullivan (~0.92 confidence) and father James Sullivan (~0.92 confidence) and mother Julia Sullivan (~0.92 confidence) and mother Mary Sullivan (~0.92 confidence) and mother Bridget Sullivan (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Patrick Sullivan
b. ~1865
Source father
● Household
· direct · ~0.92
Father
James Sullivan
b. ~1862
Source father
● Household
· direct · ~0.92
Mother
Julia Sullivan
b. ~1872
Source mother
● Household
· direct · ~0.92
Mother
Mary Sullivan
b. ~1868
Source mother
● Household
· direct · ~0.92
Mother
Bridget Sullivan
b. ~1863
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Sullivan
Son · 1920 · age 22 · b. ~1898 · Illinois
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Sibling
Thomas Sullivan
Sibling · 1920 · age 13
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 — Cook, Illinois
Open full size
1920 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu347unit:0289)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Joseph Schmitz | 4 | Son | None | Illinois |
| 52 | Joseph Seimitz | 54 | Father-in-law | Moulder | Indiana |
| 53 | Clement Seimitz | 23 | Brother-in-law | Maintenanceman | Indiana |
| 54 | Ambrose Seimitz | 21 | Brother-in-law | Auto Driver | Indiana |
| 55 | Mary Seimitz | 19 | Sister-in-law | Labeling | Illinois |
| 56 | Henrietta Seimitz | 17 | Sister-in-law | Wrapper | Illinois |
| 57 | Raymond Seimitz | 14 | Brother-in-law | None | Illinois |
| 58 | Arthur Seimitz | 12 | Brother-in-law | None | Illinois |
| 59 | William Schubert | 50 | Head | Policeman | Illinois |
| 60 | Emma Schubert | 47 | Wife | None | Indiana |
| 61 | Patrick Mccluskey | 49 | Head | Carpenter | Ireland |
| 62 | Leo Mccluskey | 27 | Son | Clerk | Illinois |
| 63 | Catherine Mccluskey | 19 | Daughter | Instructor | Illinois |
| 64 | Josephine Mccluskey | 17 | Daughter | None | Illinois |
| 65 | Julia Sullivan | 48 | Head | None | Ireland |
| 66 | James Sullivan THIS PERSON | 22 | Son | Motorman | Illinois |
| 67 | Thomas Sullivan | 13 | Son | None | Illinois |
| 68 | John Sullivan | 28 | Head | Clerk | Illinois |
| 69 | Marie Sullivan | 25 | Wife | None | Illinois |
| 70 | Anna Sullivan | 3 | Daughter | None | Illinois |
| 71 | John Sullivan | 2 | Son | None | Illinois |
| 72 | Peter Ambrose | 28 | Head | Yard Clerk | Illinois |
| 73 | Catherine Ambrose | 31 | Wife | None | Illinois |
| 74 | Edna Ambrose | 13 | Daughter | None | Illinois |
| 75 | Catherine Ambrose | 12 | Daughter | None | Illinois |
| 76 | William Ambrose | 7 | Son | None | Illinois |
| 77 | Edward Ambrose | 4 | Son | None | Illinois |
| 78 | Joseph Ambrose | 2 | Son | None | Illinois |
| 79 | Thomas Ambrose | 1 | Son | None | Illinois |
| 80 | George Howard | 34 | Brother-in-law | Boxmaker | Illinois |
| 81 | Edward Howard | 24 | Brother-in-law | Machinist | Illinois |
| 82 | William Howard | 21 | Brother-in-law | Trucker | Illinois |
| 83 | Frank E. Dugan | 25 | Head | Freight Conductor | Illinois |
| 84 | Mary C. Dugan | 25 | Wife | None | Illinois |
| 85 | Mary Casey | 50 | Mother-in-law | None | Ireland |
| 86 | John Connan | 39 | Head | Salesman | Ireland |
| 87 | Mary Connan | 37 | Wife | None | Ireland |
| 88 | Mary Connan | 11 | Daughter | None | Ireland |
| 89 | Ethel Connan | 8 | Daughter | None | Ireland |
| 90 | Thomas Clore | 49 | Boarder | Sailor | Ireland |
| 91 | John Grimley | 45 | Head | Inspector | Ireland |
| 92 | Catherine Grimley | 10 | Daughter | None | Illinois |
| 93 | Margaret Duffy | 47 | Sister | None | Ireland |
| 94 | John Duffy | 26 | Niece | Clerk | Illinois |
| 95 | John Barta | 45 | Head | Laborer | Bohemia |
| 96 | Mary Barta | 45 | Wife | None | Bohemia |
| 97 | Manda Barta | 24 | Daughter | Stenographer | Illinois |
| 98 | John Barta | 20 | Son | None | Illinois |
| 99 | John Pladowiak | 41 | Head | Tailor | Poland |
| 100 | Madaline Pladowiak | 35 | Wife | None | Illinois |
Pedigree Summary
James + 1 sibling
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)