MR
Margaret Riley — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Margaret Riley across the 1910, 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Margaret & William — first a daughter (b.~1906), then head of a 3-person household.
Age 34
b. ~1906
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Riley |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Some House |
| 1935 Residence (County) | Some House |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Bank |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1380 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Stenographer |
| Township / Ward | Chicago |
| Est. Birth Year | ~1906 |
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 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Margaret Riley | Daughter | — | 34 | ~1906 |
| William Riley | Head | — | 70 | ~1870 |
| Margaret Riley | Spouse | — | 66 | ~1874 |
Census Appearances
1910
Cook, Illinois
Daughter, age 4
Cook, Illinois · implied b. ~1906 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Riley |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Daughter, age 14
Cook, Illinois · implied b. ~1906 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Riley |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Daughter, age 24
Cook, Illinois · implied b. ~1906 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Riley |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Operator |
| Industry | Tel. Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 34
Cook-County, Illinois · implied b. ~1906 — 3 household members
| Surname | Riley |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Some House |
| 1935 Residence (County) | Some House |
| Occupation | Stenographer |
| Industry | Bank |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1380 |
| Highest Grade | Hs 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 Margaret Riley across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Margaret Riley (~0.92 confidence) and father William Riley (~0.92 confidence) and father William Riley (~0.92 confidence) and mother Margaret Riley (~0.92 confidence) and mother Fannie Riley (~0.92 confidence) and mother Margaret Riley (~0.92 confidence) and father George Riley (~0.92 confidence). The pedigree spans 1 generation with 7 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Margaret Riley
b. ~1867
Source mother
● Household
· direct · ~0.92
Father
William Riley
b. ~1867
Source father
● Household
· direct · ~0.92
Father
William Riley
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Margaret Riley
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Fannie Riley
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Margaret Riley
b. ~1881
Source mother
● Household
· direct · ~0.92
Father
George Riley
b. ~1882
Source father
● Household
· direct · ~0.92
This person
Anchor record
Margaret Riley
Daughter · 1940 · age 34 · b. ~1906 · Illinois
★ You are viewing this record
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
39 people indexed on this census page (nara:1940:m-t0627-01012-00635)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Walter Witkowski | 25 | Son | Solderer | Illinois |
| 42 | Irene Witkowski | 11 | Daughter | — | Illinois |
| 43 | Edwin Gechotski | 37 | Head | Wood Finisher | Wisconsin |
| 44 | Helen Gechotski | 34 | Wife | — | Illinois |
| 45 | Edwin Gechotski | 10 | Son | — | Illinois |
| 46 | Delores Gechotski | 6 | Daughter | — | Illinois |
| 48 | Catherine Roeder | 56 | Head | — | Illinois |
| 49 | Otto Roeder | 50 | Brother | Laborer | Illinois |
| 50 | Margaret Roeder | 46 | Sister | — | Illinois |
| 51 | Ludwig Keller | 44 | Head | Solderer | Germany |
| 52 | Freida Keller | 47 | Wife | Painter | Germany |
| 53 | Lawrence Keller | 19 | Son | — | Germany |
| 54 | Walter Skwarski | 53 | Head | Screw Machine Oper. | Poland |
| 55 | Anna Skwarski | 50 | Wife | Candy Mixer | Poland |
| 56 | Mary Skwarski | 27 | Daughter | — | Illinois |
| 57 | Edward Skwarski | 26 | Son | Typist - Office | Illinois |
| 58 | Lottie Skwarski | 24 | Daughter | Welder | Illinois |
| 59 | Stanley Skwarski | 23 | Son | Coil Winder | Illinois |
| 60 | William Skwarski | 18 | Son | Laborer | Illinois |
| 61 | Felix Skwarski | 18 | Son | Punch Press Oper. | Illinois |
| 62 | Josephine Skwarski | 17 | Daughter | Messenger Boy | Illinois |
| 63 | Leo Skwarski | 17 | Son | Coil Winder | Illinois |
| 64 | Helen Skwarski | 13 | Daughter | — | Illinois |
| 65 | Angelina Skwarski | 9 | Daughter | — | Illinois |
| 66 | Joseph Cornelius | 37 | Head | Chauffeur | Illinois |
| 67 | Mary Cornelius | 30 | Wife | — | Illinois |
| 68 | Robert Cornelius | 13 | Son | — | Illinois |
| 69 | Joseph Cornelius | 10 | Son | — | Illinois |
| 70 | Annette Cornelius | 9 | Daughter | — | Illinois |
| 71 | Donald Cornelius | 5 | Son | — | Illinois |
| 72 | Joan Cornelius | 5 | Daughter | — | Illinois |
| 73 | William Riley | 70 | Head | — | Illinois |
| 74 | Margaret Riley | 66 | Wife | — | Illinois |
| 75 | Margaret Riley THIS PERSON | 34 | Daughter | Stenographer | Illinois |
| 76 | Joseph Kaczynski | 25 | Head | Drill Press Operator | Illinois |
| 77 | Alice Kaczynski | 24 | Wife | Cable Winder | Illinois |
| 78 | George Kunz | 35 | Head | Delivery | Illinois |
| 79 | Anne Kunz | 35 | Wife | — | Illinois |
| 80 | James Kunz | 9 | Son | — | Illinois |
Pedigree Summary
Margaret
Gen 1 · 7 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)