JC
James Callahan — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this James Callahan across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a head (b.~1888), then head of a 11-person household.
Age 42
b. ~1888
Male
Head
Born: Indiana
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Callahan |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 21 |
| Father's Birthplace | Indiana |
| Mother's Birthplace | New York |
| Additional Details | |
| Occupation | Buyer |
| Industry | Millinery Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 18000 |
| Radio Set | R |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Buyer |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1888 |
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.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Patricia Callahan | Daughter | — | 5 | ~1925 |
| Lillian Mohran | Other | — | 21 | ~1909 |
| Dorothy Callahan | Daughter | — | 11 | ~1919 |
| Margaret Callahan | Spouse | — | 41 | ~1889 |
| James Callahan | Head | — | 42 | ~1888 |
| Francis Callahan | Son | — | 17 | ~1913 |
| James Callahan | Son | — | 19 | ~1911 |
| Catherine Callahan | Daughter | — | 14 | ~1916 |
| Mary Callahan | Daughter | — | 16 | ~1914 |
| Margaret Callahan | Daughter | — | 18 | ~1912 |
| Helen Callahan | Daughter | — | 7 | ~1923 |
Census Appearances
1930
Cook, Illinois
Head, age 42
Cook, Illinois · implied b. ~1888 — 11 household members
| Surname | Callahan |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 21 |
| Father's Birthplace | Indiana |
| Mother's Birthplace | New York |
| Occupation | Buyer |
| Industry | Millinery Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 18000 |
| Radio Set | R |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Cook-County, Illinois
Head, age 53
Cook-County, Illinois · implied b. ~1887 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Challahan |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Hours Worked | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Callahan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Callahan
Head · 1930 · age 42 · b. ~1888 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel493ns:0928)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Muriel Talbot | 28 | Daughter | Secretary | Illinois |
| 2 | Israel Delafsky | 45 | Head | Manager | Russia |
| 3 | Anna Delafsky | 44 | Wife | — | Russia |
| 4 | Albert Delafsky | 18 | Son | — | Illinois |
| 5 | Martin Delafsky | 18 | Son | — | Illinois |
| 6 | Sherman Delafsky | 11 | Son | — | Illinois |
| 7 | Timothy Vail | 46 | Head | President | Illinois |
| 8 | Julia Vail | 40 | Wife | — | Illinois |
| 9 | Mary J. Vail | 14 | Daughter | — | Illinois |
| 10 | Robert Vail | 13 | Son | — | Illinois |
| 11 | Betty Vail | 9 | Daughter | — | Illinois |
| 12 | Julia V. Kelley | 70 | Grandmother | — | Ireland Free State |
| 13 | Nonie Kelley | 38 | Sister | Teacher | Illinois |
| 14 | Mary Kelley | 28 | Sister | Secretary | Illinois |
| 15 | Patrick O'Grady | 71 | Head | Retired | England |
| 16 | Katherine O'Grady | 64 | Wife | — | Iowa |
| 17 | Mary O'Grady | 42 | Daughter | — | Iowa |
| 18 | Kathleen R. O'Grady | 32 | Daughter | Copywriter | Iowa |
| 19 | J. Emmet O'Grady | 30 | Son | Accountant | Iowa |
| 20 | Bernard A. O'Grady | 26 | Son | Manager | Iowa |
| 21 | Sadie Flanegan | 51 | Sister | — | Iowa |
| 22 | James Hughes | 50 | Head | Manager | Iowa |
| 23 | Alice Hughes | 46 | Wife | — | Pennsylvania |
| 24 | Frances Hughes | 16 | Daughter | — | Pennsylvania |
| 25 | John Hughes | 14 | Son | — | Illinois |
| 26 | Virginia Hughes | 11 | Daughter | — | Illinois |
| 27 | Anna Delacic | 27 | Servant | Servant | Czechoslovakia |
| 28 | John J. Mcdonough | 60 | Head | Buyer | Ireland Free State |
| 29 | Alice Mcdonough | 49 | Wife | — | Pennsylvania |
| 30 | Edward F. Mcdonough | 23 | Son | Cashier | Pennsylvania |
| 31 | John J. Jr. Mcdonough | 22 | Son | Clerk Office | Michigan |
| 32 | J. Harris Mcdonough | 21 | Son | Shipping Clerk | Omaha |
| 33 | Walter Mcdonough | 16 | Son | — | Wisconsin |
| 34 | S. Robert Mcdonough | 15 | Son | — | Wisconsin |
| 35 | Anna Barry | 60 | Sister | — | Pennsylvania |
| 36 | James Callahan THIS PERSON | 42 | Head | Buyer | Indiana |
| 37 | Margaret Callahan | 41 | Wife | — | Indiana |
| 38 | James C. Callahan | 19 | Son | — | Indiana |
| 39 | Margaret Callahan | 18 | Daughter | — | Indiana |
| 40 | Francis Callahan | 17 | Son | — | Indiana |
| 41 | Mary J. Callahan | 16 | Daughter | — | Indiana |
| 42 | Catherine R. Callahan | 14 | Daughter | — | Indiana |
| 43 | Dorothy J. Callahan | 11 | Daughter | — | Illinois |
| 44 | Helen T. Callahan | 7 | Daughter | — | Illinois |
| 45 | Patricia Callahan | 5 | Daughter | — | Illinois |
| 46 | Lillian Mohran | 21 | Servant | Servant | Ireland Free State |
| 47 | William Baker | 45 | Head | Messenger | Illinois |
| 48 | Gertrude Baker | 41 | Wife | — | Illinois |
| 49 | Sister Clarice | 40 | — | Secretary | Illinois |
| 50 | William Mannhardt | 60 | Lodger | Lawyer | Illinois |
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)