MR
Mary Ryan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Ryan across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Stephen & James — first a daughter (b.~1917), then head of a 5-person household.
Age 23
b. ~1917
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Ryan |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Real estate |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 980 |
| Highest Grade | C-4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Stenographer |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1917 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Eileen Ryan | Daughter | — | 20 | ~1920 |
| Mary Ryan | Daughter | — | 23 | ~1917 |
| James Ryan | Head | — | 53 | ~1887 |
| James Ryan | Son | — | 18 | ~1922 |
| Mary Ryan | Spouse | — | 54 | ~1886 |
Census Appearances
1920
Cook, Illinois
Daughter, age 1
Cook, Illinois · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ryan |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 12
Cook, Illinois · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ryan |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 23
Cook-County, Illinois · implied b. ~1917 — 5 household members
| Surname | Ryan |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Stenographer |
| Industry | Real estate |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 980 |
| Highest Grade | C-4 |
| 1935 Residence | Same place |
| 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 Mary Ryan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Stephen Ryan (~0.92 confidence) and father James Ryan (~0.92 confidence) and father James Ryan (~0.83 confidence) and mother Julia Ryan (~0.83 confidence) and mother Madge Ryan (~0.92 confidence) and mother Marion Ryan (~0.92 confidence) and mother Mary Ryan (~0.92 confidence). The pedigree spans 2 generations with 7 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.89
Father
Stephen Ryan
b. ~1888
Source father
● Household
· direct · ~0.92
Father
James Ryan
b. ~1887
Source father
● Household
· direct · ~0.92
Father
James Ryan
b. ~1855
Source father>father
● Household
· direct · ~0.83
Mother
Julia Ryan
b. ~1867
Source father>mother
● Household
· direct · ~0.83
Mother
Madge Ryan
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Marion Ryan
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Mary Ryan
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Ryan
Daughter · 1940 · age 23 · b. ~1917 · Illinois
★ You are viewing this record
Sibling
Eileen Ryan
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Ryan
Sibling · 1940 · age 18
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-t0627-00959-00752)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Genevieve Canfield | 16 | Daughter | — | Illinois |
| 2 | Herman Canfield | 13 | Son | — | Illinois |
| 3 | Robert Canfield | 10 | Son | — | Illinois |
| 4 | John B. Carey | 48 | Head | Grain Broker | Illinois |
| 5 | Eleanor Carey | 35 | Wife | — | Illinois |
| 6 | Elizabeth Mulvile | 68 | M-in-law | — | Illinois |
| 7 | Otto Gehren | 50 | Head | Clerical Work | Illinois |
| 8 | Helen Gehren | 47 | Wife | — | Illinois |
| 9 | Richard Gehren | 25 | Son | Salesman | Illinois |
| 10 | Mary Day | 68 | M-in-law | — | Colorado |
| 11 | James Ryan | 53 | Head | Asst-Bldg Manager | Illinois |
| 12 | Mary Ryan | 54 | Wife | — | Michigan |
| 13 | Mary Jane Ryan THIS PERSON | 23 | Daughter | Stenographer | Illinois |
| 14 | Eileen Ryan | 20 | Daughter | School Clerk | Illinois |
| 15 | James Jr. Ryan | 18 | Son | — | Illinois |
| 16 | Edna B. Hanley | 31 | Head | — | Illinois |
| 17 | Herbert Hanley | 23 | Brother | — | Illinois |
| 18 | Otto Pharson | 66 | Head | Commercial Artist | Sweden |
| 19 | Josephine Pharson | 63 | Wife | — | Illinois |
| 20 | John Pharson | 22 | Son | — | Illinois |
| 21 | Harry Hagenbuck | 63 | Head | Office Manager | Illinois |
| 22 | Nellie Hagenbuck | 55 | Wife | — | Missouri |
| 23 | Harry Jr. Hagenbuck | 24 | Son | Bank Messenger | Illinois |
| 24 | Ray Franklin | 42 | Lodger | Machinist | Illinois |
| 25 | Elmer Jahnel | 38 | Head | Pharmacist | Illinois |
| 26 | Frances Jahnel | 38 | Wife | Teacher | Illinois |
| 27 | Millard Jahnel | 10 | Son | — | Illinois |
| 28 | Donna Jahnel | 8 | Daughter | — | Illinois |
| 29 | Oscar Fiegl | 52 | Head | Wholesale Grocer | Illinois |
| 30 | Lillian Fiegl | 50 | Wife | — | Illinois |
| 31 | Dorothy Fiegl | 19 | Daughter | — | Illinois |
| 32 | Chester Stolpner | 36 | Head | Wholesale Meats | Illinois |
| 33 | Clara Stolpner | 34 | Wife | — | Canadian |
| 34 | Chester Jr. Stolpner | 10 | Son | — | Illinois |
| 35 | Carolyn Stolpner | 4 | Daughter | — | Illinois |
| 36 | Ray Plaster | 43 | Head | Assistant Freight Agt | Indiana |
| 37 | Jane Plaster | 42 | Wife | — | Kansas |
| 38 | Phyllis Plaster | 11 | Daughter | — | Indiana |
| 39 | James Lenory | 40 | Head | Mgr. Of Sales Dept. | Illinois |
| 40 | Helen Lenory | 36 | Wife | — | Illinois |
Pedigree Summary
Mary + 2 siblings
Gen 1 · 5 parents
~0.92
Gen 2 · 2 grandparents
~0.83
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)