MO
Mary Orr — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Orr across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1895), then head of a 7-person household.
Age 45
b. ~1895
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Orr |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Berwyn City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Industry | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Berwyn City |
| Est. Birth Year | ~1895 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Orr | Spouse | — | 45 | ~1895 |
| Mila Orr | Daughter | — | 13 | ~1927 |
| Miriam Orr | Daughter | — | 14 | ~1926 |
| Martha Orr | Daughter | — | 16 | ~1924 |
| Roger Orr | Son | — | 9 | ~1931 |
| Orval Orr | Head | — | 48 | ~1892 |
| Louise Orr | Daughter | — | 21 | ~1919 |
Census Appearances
1930
Cook, Illinois
Spouse, age 36
Cook, Illinois · implied b. ~1894 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ore |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 24 |
| 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
Spouse, age 45
Cook-County, Illinois · implied b. ~1895 — 7 household members
| Surname | Orr |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Berwyn City |
| 1935 Residence (County) | Cook |
| Industry | 0 |
| 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 Mary Orr across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Orr
Spouse · 1940 · age 45 · b. ~1895 · 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
40 people indexed on this census page (nara:1940:m-t0627-00772-00149)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank Jr Blachta | 19 | son | Mail Carrier | Illinois |
| 2 | Vincent Straka | 48 | head | Carpenter | Illinois |
| 3 | Marie Straka | 48 | wife | — | Czechoslovakia |
| 4 | Marie Straka | 18 | daughter | — | Illinois |
| 5 | Dorothy Straka | 17 | daughter | — | Illinois |
| 6 | Rosalie Straka | 9 | daughter | — | Illinois |
| 7 | John Korca | 61 | head | Carpenter | Czechoslovakia |
| 8 | Anna Korca | 55 | wife | — | Illinois |
| 9 | George Kastner | 27 | son in law | Accountant | Illinois |
| 10 | Lucille Kastner | 24 | daughter | — | Illinois |
| 11 | Sibyl Kastner | 5 | grand daughter | — | Illinois |
| 12 | Louis Pisha | 47 | head | Mechanic | Colorado |
| 13 | Marie Pisha | 45 | wife | — | Illinois |
| 14 | Marie Pisha | 14 | daughter | — | Illinois |
| 15 | Helen Pisha | 12 | daughter | — | Illinois |
| 16 | Thomas Coles | 57 | head | Switchman | England |
| 17 | Mamie Coles | 58 | wife | — | Pennsylvania |
| 18 | Harold E. Spear | 37 | head | Chief Clerk | Iowa |
| 19 | Margaret Spear | 34 | wife | — | Illinois |
| 20 | Rudolph R Hlanka | 62 | head | Foreman | Illinois |
| 21 | Anna Hlanka | 58 | wife | — | Czechoslovakia |
| 22 | Rudolph B Hlanka | 32 | son | Mailer Clerk | Illinois |
| 23 | John F Hlanka | 24 | son | — | Illinois |
| 24 | Paul A Hlanka | 18 | son | — | Illinois |
| 25 | Casimir Dostal | 45 | head | Photo Finisher | Wisconsin |
| 26 | Nell Dostal | 50 | wife | — | Wisconsin |
| 27 | Carol Dostal | 21 | daughter | Forewoman | Illinois |
| 28 | June Dostal | 16 | daughter | — | Illinois |
| 29 | Orval Orr | 48 | head | Mail Clerk | Illinois |
| 30 | Mary Orr THIS PERSON | 45 | wife | — | Illinois |
| 31 | Louise Orr | 21 | daughter | Secretary | Illinois |
| 32 | Martha Orr | 16 | daughter | — | Illinois |
| 33 | Miriam Orr | 14 | daughter | — | Illinois |
| 34 | Mila Orr | 13 | daughter | — | Illinois |
| 35 | Roger Orr | 9 | son | — | Illinois |
| 36 | Frank Stephan | 66 | head | — | Czechoslovakia |
| 37 | Rose Stephan | 55 | wife | — | Illinois |
| 38 | Walter H Flinn | 56 | head | Supervisor | Wisconsin |
| 39 | Florence Flinn | 54 | wife | — | Illinois |
| 40 | Mabel Evans | 63 | head | — | Illinois |
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)