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James Ryan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this James Ryan across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Dennis & Mary — first a son (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Ryan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | CHICAGO |
| 1935 Residence (County) | COOK |
| Additional Details | |
| Occupation | Accountant |
| Industry | Oil Manufacturing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 210 |
| Highest Grade | Hs 4-4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Accountant |
| Township / Ward | Chicago |
| Est. Birth Year | ~1919 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Margaret Ryan | Daughter | — | 20 | ~1920 |
| Marie Ryan | Daughter | — | 17 | ~1923 |
| Dennis Ryan | Head | — | 63 | ~1877 |
| James Ryan | Son | — | 21 | ~1919 |
| William Ryan | Son | — | 23 | ~1917 |
| Mary Ryan | Spouse | — | 57 | ~1883 |
Census Appearances
1920
Cook, Illinois
Son, age 1
Cook, Illinois · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ryan |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 11
Cook, Illinois · implied b. ~1919 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ryan |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Industry | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 21
Cook-County, Illinois · implied b. ~1919 — 6 household members
| Surname | Ryan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | CHICAGO |
| 1935 Residence (County) | COOK |
| Occupation | Accountant |
| Industry | Oil Manufacturing |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 210 |
| Highest Grade | Hs 4-4 |
| 1935 Residence | Same house |
| 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 Ryan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Dennis Ryan (~0.92 confidence) and mother Mary Ryan (~0.92 confidence) and father Edward Ryan (~0.92 confidence) and mother Johanna Ryan (~0.92 confidence) and mother Bernice Ryan (~0.92 confidence) and father Martin Ryan (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Dennis Ryan
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Mary Ryan
b. ~1883
Source mother
● Household
· direct · ~0.92
Father
Edward Ryan
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Johanna Ryan
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Bernice Ryan
b. ~1896
Source mother
● Household
· direct · ~0.92
Father
Martin Ryan
b. ~1898
Source father
● Household
· direct · ~0.92
This person
Anchor record
James Ryan
Son · 1940 · age 21 · b. ~1919 · Illinois
★ You are viewing this record
Sibling
Margaret Ryan
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marie Ryan
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Ryan
Sibling · 1940 · age 23
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
1940 US Federal Census — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01012-00337)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Flora Hofman | 13 | Daughter | — | Illinois |
| 42 | Henry B. Graf | 36 | Head | Laborer | Germany |
| 43 | Edna Graf | 40 | Wife | — | Indiana |
| 44 | Frances Wilke | 69 | Motherinlaw | — | Indiana |
| 45 | Alexander Mckee | 22 | Head | Cutter | Ohio |
| 46 | Mary Mckee | 23 | Wife | — | Pennsylvania |
| 47 | Lillian Stanley | 55 | Motherinlaw | — | Pennsylvania |
| 48 | Anna Pentis | 69 | Head | — | Bohemia |
| 49 | Louis Pentis | 30 | Son | Clerk | Illinois |
| 50 | Mary Pentis | 26 | Daughter | Clerk | Illinois |
| 51 | Melvin Grieve | 27 | Head | Assembler | Kansas |
| 52 | Lola Grieve | 22 | Wife | — | Kansas |
| 53 | Hazel Bruce | 19 | Sisterinlaw | Sales Lady | Kansas |
| 54 | Anna Koegel | 55 | Head | — | Hungary |
| 55 | Ann Koegel | 22 | Daughter | Beauty Operator | Illinois |
| 56 | Peter Koegel | 32 | Son | Assembler | Hungary |
| 57 | Minnie Krull | 75 | Head | — | Germany |
| 58 | Selma Budinger | 52 | Daughter | — | Illinois |
| 59 | Walter Budinger | 31 | Grandson | Machinist | Illinois |
| 60 | Fred Budinger | 26 | Grandson | Mechanic | Illinois |
| 61 | Joseph Pizza | 70 | Head | Supervisor | Italy |
| 62 | Dolores Pizza | 27 | Daughter | — | Illinois |
| 63 | Lenore Pizza | 23 | Daughter | Watchman | Illinois |
| 64 | Viola Barkstrom | 33 | Daughter | Solderer | Illinois |
| 65 | Jane Barkstrom | 15 | Granddaughter | — | Illinois |
| 66 | Dora May Barkstrom | 13 | Granddaughter | — | Illinois |
| 67 | Gilbert Barkstrom | 11 | Grandson | — | Illinois |
| 68 | Roland Landini | 22 | Grandson | Inspector | Illinois |
| 69 | Arthur Landini | 28 | Grandson | Waiter | Illinois |
| 70 | Raymond John | 25 | Head | Waiter | Illinois |
| 71 | Virginia John | 22 | Wife | Machine Operator | Illinois |
| 72 | Lawrence Wilson | 28 | Lodger | Inspector | Michigan |
| 73 | Caroline Wilson | 29 | Lodger | Salesman | Illinois |
| 74 | Marilyn Wilson | 3 | Lodger | — | Illinois |
| 75 | Dennis Ryan | 63 | Head | Clerk | Ohio |
| 76 | Mary Ryan | 57 | Wife | — | Ohio |
| 77 | William Ryan | 23 | Son | Research Work | Illinois |
| 78 | James Ryan THIS PERSON | 21 | Son | Accountant | Illinois |
| 79 | Margaret Ryan | 20 | Daughter | Stenographer | Illinois |
| 80 | Marie Ryan | 17 | Daughter | — | Illinois |
Pedigree Summary
James + 3 siblings
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)