JG
John Gallagher — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this John Gallagher across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a head (b.~1874), then head of a 3-person household.
Age 56
b. ~1874
Male
Head
Born: Ireland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Gallagher |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1886 |
| Age at First Marriage | 22 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Switchman |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 32 |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Switchman |
| Township / Ward | Chicago |
| Est. Birth Year | ~1874 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Gallagher | Daughter | — | 18 | ~1912 |
| John Gallagher | Head | — | 56 | ~1874 |
| Alice Gallagher | Spouse | — | 50 | ~1880 |
Census Appearances
1920
Cook, Illinois
Head, age 44
Cook, Illinois · implied b. ~1876 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gallagher |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1885 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Cooker |
| Industry | Gas Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1890 |
| Birthplace (normalized) | ireland |
1930
Cook, Illinois
Head, age 56
Cook, Illinois · implied b. ~1874 — 3 household members
| Surname | Gallagher |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1886 |
| Age at First Marriage | 22 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Switchman |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 32 |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Cook-County, Illinois
Other, age 68
Cook-County, Illinois · implied b. ~1872 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gallagher |
| Given Name | John |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | Laborer |
| Industry | Steel Mill |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 291 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 John Gallagher across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Gallagher
Head · 1930 · age 56 · b. ~1874 · Illinois
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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:illinoiscensus00reel467:0167)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Eddie Kaufman | 45 | Head | Manager | Russia |
| 2 | Mary Kaufman | 46 | Wife | — | Russia |
| 3 | Rebecca Kaufman | 15 | Daughter | Ticket Writer | Illinois |
| 4 | Edith Kaufman | 8 | Daughter | — | Illinois |
| 5 | Jack Weiner | 23 | Lodger | Setter | Russia |
| 6 | Morris Kaufman | 5 | Son | — | Illinois |
| 7 | Andrew Miloch | 30 | Head | Teamster | Illinois |
| 8 | Sophie Miloch | 33 | Wife | Operator | Poland |
| 9 | Mike Maday | 33 | Head | Cook | Austria |
| 10 | John G. Pack | 42 | Head | Foreman | Pennsylvania |
| 11 | Edna A. Pack | 40 | Wife | — | Pennsylvania |
| 12 | Walter W. Pack | 13 | Son | — | Michigan |
| 13 | Edna Pack | 2 | Daughter | — | Illinois |
| 14 | Daniel Febel | 30 | Head | Laborer | Yugoslavia |
| 15 | Elois Febel | 27 | Wife | — | Illinois |
| 16 | Matthew Riley | 45 | Head | Gas Fitter | Illinois |
| 17 | Helen E. Riley | 32 | Wife | — | Illinois |
| 18 | Elmer Hinter | 24 | Head | Machinist | Illinois |
| 19 | Edith Hinter | 24 | Wife | — | Illinois |
| 20 | Charles Bechtel | 42 | Head | Stock Room | Ohio |
| 21 | Helen Bechtel | 39 | Wife | — | Illinois |
| 22 | Henry Biddendick | 40 | Head | Sanding | Illinois |
| 23 | Jeanette Biddendick | 37 | Wife | — | Illinois |
| 24 | John M. Biddendick | 14 | Son | — | Illinois |
| 25 | Edward A. Biddendick | 12 | Son | — | Illinois |
| 26 | John Olmberger | 66 | Head | — | Germany |
| 27 | Anne Olmberger | 35 | Niece | — | Germany |
| 28 | George Olmberger | 33 | Head | Janitor | Germany |
| 29 | Anna Olmberger | 42 | Wife | — | Germany |
| 30 | Rosina Olmberger | 15 | Daughter | — | Germany |
| 31 | Louise Olmberger | 8 | Daughter | — | Illinois |
| 32 | Frank R. Ardunow | 58 | Head | Hoisting | Canada English |
| 33 | Katherine Ardunow | 55 | Wife | — | Nebraska |
| 34 | John Gallagher THIS PERSON | 56 | Head | Switchman | Ireland |
| 35 | Alice Gallagher | 50 | Wife | — | Pennsylvania |
| 36 | Mary E. Gallagher | 18 | Daughter | — | Pennsylvania |
| 37 | Fred Spitzer | 31 | Head | Baker | Czechoslovakia |
| 38 | Rose Spitzer | 30 | Wife | — | Czechoslovakia |
| 39 | Erma Spitzer | 3 | Daughter | — | Czechoslovakia |
| 40 | Henry Menard | 32 | Head | Proprietor | Illinois |
| 41 | Josephine Menard | 27 | Wife | — | Illinois |
| 42 | Martin Wojcieszak | 52 | Head | Laborer | Poland |
| 43 | Sophie Wojcieszak | 45 | Wife | — | Poland |
| 44 | Katherine Wojcieszak | 22 | Daughter | Clerical | Illinois |
| 45 | Andrew Wojcieszak | 20 | Son | — | Illinois |
| 46 | Rose Wojcieszak | 18 | Daughter | Clerical | Illinois |
| 47 | Helen Wojcieszak | 16 | Daughter | — | Illinois |
| 48 | Stella Wojcieszak | 15 | Daughter | — | Illinois |
| 49 | Lillian Wojcieszak | 10 | Daughter | — | Illinois |
| 50 | Victor Muschi | 30 | Head | Pastry Cook | Switzerland |
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)