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John Conroy — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this John Conroy across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a head (b.~1879), then head of a 5-person household.
Age 51
b. ~1879
Male
Head
Born: Ireland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Conroy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1911 |
| Age at First Marriage | 20 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Carpenter |
| Industry | Construction |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 50 |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Carpenter |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1879 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Conroy | Head | — | 51 | ~1879 |
| Nancy Conroy | Daughter | — | 18 | ~1912 |
| Jacqueline Conroy | Daughter | — | 15 | ~1915 |
| Blanche Conroy | Spouse | — | 50 | ~1880 |
| Alan Conroy | Son | — | 21 | ~1909 |
Census Appearances
1920
Cook, Illinois
Head, age 43
Cook, Illinois · implied b. ~1877 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Conroy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Ireland |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Switchman |
| Industry | Ill Central RR |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Cook, Illinois
Head, age 51
Cook, Illinois · implied b. ~1879 — 5 household members
| Surname | Conroy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1911 |
| Age at First Marriage | 20 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Carpenter |
| Industry | Construction |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 50 |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Cook-County, Illinois
Other, age 65
Cook-County, Illinois · implied b. ~1875 — 40 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Conroy |
| Given Name | John |
| Relationship to Head | Inmate |
| Sex | M |
| Color / Race | White |
| Age | 65 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Bremen Twp |
| 1935 Residence (County) | Cook |
| Naturalization Status | First papers filed |
| Industry | Inmate |
| Highest Grade | No 6 |
| 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 Conroy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Conroy
Head · 1930 · age 51 · b. ~1879 · 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:illinoiscensus00reel445:0215)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Amelia Gusman | 50 | Daughter | Saleslady | Illinois |
| 2 | Bernadine Gusman | 22 | Grand Daughter | Clerical | Illinois |
| 3 | Jennie Horkman | 52 | Head | — | Wisconsin |
| 4 | Sarah Hock | 27 | Daughter | — | Wisconsin |
| 5 | Raymond E Luck | 37 | Head | Accountant | Illinois |
| 6 | Ada Luck | 37 | Wife | — | Illinois |
| 7 | Raymond Luck | 12 | Son | — | Illinois |
| 8 | Paul Luck | 10 | Son | — | Illinois |
| 9 | Ada M Luck | 8 | Daughter | — | Illinois |
| 10 | John W Taylor | 48 | Brother-in-law | Painter | England |
| 11 | Michael Grace | 55 | Head | — | Ireland Free State |
| 12 | Elizabeth M Grace | 53 | Wife | — | Ireland Free State |
| 13 | John Westerhoff | 33 | Head | Inspector | Illinois |
| 14 | Katherine C Westerhoff | 35 | Wife | — | Illinois |
| 15 | Dorothy Westerhoff | 7 | Daughter | — | Illinois |
| 16 | Veronica Westerhoff | 2 | Daughter | — | Illinois |
| 17 | William B Holland | 63 | Head | Bookkeeper | New York |
| 18 | Ellen A Holland | 64 | Wife | — | New York |
| 19 | Helen M Holland | 34 | Daughter | Clerical | New York |
| 20 | James A Becker | 53 | Head | Salesman | Michigan |
| 21 | Anna Becker | 46 | Wife | — | Michigan |
| 22 | John L Ryan | 46 | Head | — | Illinois |
| 23 | Edward A Ryan | 21 | Son | — | Illinois |
| 24 | Margaret A Ryan | 17 | Daughter | — | Illinois |
| 25 | Dorothy R Ryan | 15 | Daughter | — | Illinois |
| 26 | Harry I Kahn | 41 | Head | Proprietor | Russia |
| 27 | Ida Kahn | 40 | Wife | Saleslady | Illinois |
| 28 | Lester Kahn | 16 | Son | — | Illinois |
| 29 | Raymond B Kahn | 11 | Son | — | Illinois |
| 30 | Betty E Kahn | 6 | Daughter | — | Illinois |
| 31 | Michael Lenahan | 54 | Head | Salesman | Pennsylvania |
| 32 | Agnes E Lenahan | 51 | Wife | — | Pennsylvania |
| 33 | Michael J Lenahan | 25 | Son | Commercial Artist | Pennsylvania |
| 34 | Marie E Lenahan | 18 | Daughter | Bookkeeper | Pennsylvania |
| 35 | John Conroy THIS PERSON | 51 | Head | Carpenter | Ireland |
| 36 | Blanche Conroy | 50 | Wife | — | Illinois |
| 37 | Alan Conroy | 21 | Son | — | Illinois |
| 38 | Nancy E Conroy | 18 | Daughter | — | Illinois |
| 39 | Jacqueline Conroy | 15 | Daughter | — | Illinois |
| 40 | John B Olsen | 25 | Head | Chauffeur | Sweden |
| 41 | Lucille Olsen | 22 | Wife | — | Illinois |
| 42 | Virginia Olsen | 1 | Daughter | — | Illinois |
| 43 | William H Mcconkey | 39 | Head | Yard Master | Illinois |
| 44 | Maggie E Mcconkey | 38 | Wife | — | Illinois |
| 45 | Rosemary Mcconkey | 10 | Daughter | — | Illinois |
| 46 | Rita Mcconkey | 7 | Daughter | — | Illinois |
| 47 | Eleanor Mcconkey | 1 | Daughter | — | Illinois |
| 48 | Frank E Bailey | 29 | Head | Fireman | Illinois |
| 49 | Margaret C Bailey | 31 | Wife | — | Illinois |
| 50 | Janette A Bailey | 8 | Daughter | — | 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)