MO
Mary Orr — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mahoning-County, Ohio
Our Model Tree links this Mary Orr across the 1930 and 1940 US Censuses in Mahoning-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1918), then head of a 7-person household.
Age 22
b. ~1918
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mahoning-County, Ohio |
| Surname | Orr |
| Given Name | Mary Lucy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Milton Twp |
| 1935 Residence (County) | Mahoning |
| Additional Details | |
| Occupation | School teacher |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1080 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Teacher |
| Township / Ward | Milton Twp |
| Est. Birth Year | ~1918 |
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 |
|---|---|---|---|---|
| David Orr | Son | — | 12 | ~1928 |
| Virginia Orr | Other | — | 14 | ~1926 |
| Chuck Orr | Head | — | 52 | ~1888 |
| Lilius Orr | Son | — | 18 | ~1922 |
| Mary Orr | Daughter | — | 22 | ~1918 |
| Ruth Orr | Spouse | — | 54 | ~1886 |
| Richard Orr | Son | — | 25 | ~1915 |
Census Appearances
1930
Mahoning, Ohio
Daughter, age 11
Mahoning, Ohio · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Orr |
| Given Name | Margaret E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Mahoning-County, Ohio
Daughter, age 22
Mahoning-County, Ohio · implied b. ~1918 — 7 household members
| Surname | Orr |
| Given Name | Mary Lucy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Milton Twp |
| 1935 Residence (County) | Mahoning |
| Occupation | School teacher |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1080 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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
Daughter · 1940 · age 22 · b. ~1918 · Ohio
★ You are viewing this record
Sibling
David Orr
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lilius Orr
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Orr
Sibling · 1940 · age 25
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 — Mahoning-County, Ohio
Open full size
1940 US Federal Census — Mahoning-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03109-00524)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George E. Goldner | 18 | Son | Studying Diesel Engr. | Ohio |
| 2 | Michael Harnisch | 49 | Head | Inspector | Russia |
| 3 | Anna Harnisch | 45 | Wife | — | Russia |
| 4 | Marion Harnisch | 24 | Son | — | Ohio |
| 5 | Elias Harnisch | 17 | Son | — | Ohio |
| 6 | Paul Bodnar | 60 | Head | Farmer | Hungary |
| 7 | Chuck Orr | 52 | Head | Farmer | Ohio |
| 8 | Ruth B. Orr | 54 | Wife | — | Ohio |
| 9 | Richard Orr | 25 | Son | Truck Driver | Ohio |
| 10 | Mary Lucy Orr THIS PERSON | 22 | Daughter | School Teacher | Ohio |
| 11 | Lilius Shurl Orr | 18 | Son | — | Ohio |
| 12 | Virginia Orr | 14 | Dau. | — | Ohio |
| 13 | David Orr | 12 | Son | — | Ohio |
| 14 | Michael Ballas | 67 | Head | Farmer | Slovakia |
| 15 | Anthony Ballas | 34 | Son | Laborer | Penna. |
| 16 | Jesse Goodpasture | 35 | Head | Tire Builder | Tenn. |
| 17 | Lora Goodpasture | 30 | Wife | — | Tenn. |
| 18 | Russel T. Goodpasture | 7 | Son | — | Ohio |
| 19 | Daniel B. Goodpasture | 5 | Son | — | Ohio |
| 20 | Valet Galich | 22 | Servant | Farm Hand | Ohio |
| 21 | John Lyons | 19 | Servant | Farm Hand | Kentucky |
| 22 | John R. Porter | 33 | Head | Farmer | Ohio |
| 23 | Stella Porter | 34 | Wife | — | Ohio |
| 24 | Marcheta Porter | 7 | Dau. | — | Ohio |
| 25 | Alfred Geatches | 77 | Father-in-law | — | England |
| 26 | Alfred W. Geatches | 27 | Brother-in-law | Truck Driver | Ohio |
| 27 | Rate Fenton | 65 | Head | — | Penna. |
| 28 | Arabella Broadwater | 33 | Dau. | Housework | Ohio |
| 29 | Mary Fenton | 30 | Dau. | — | Ohio |
| 30 | Zack Fenton | 27 | Son | Farmer | Ohio |
| 31 | Betty Broadwater | 16 | Gr. dau. | — | Ohio |
| 32 | William P. Bingham | 35 | Head | Farmer | Ohio |
| 33 | Alvera Bingham | 30 | Wife | — | Ohio |
| 34 | William Jr. Bingham | 9 | Son | — | Ohio |
| 35 | Dorothy Bingham | 6 | Daught | — | Ohio |
| 36 | Robert Bingham | 4 | Son | — | Ohio |
| 37 | Bertha Bingham | 1 | Daught | — | Ohio |
| 38 | Earl D. Haefner | 38 | Head | Attorney | Ohio |
| 39 | Leona Haefner | 32 | Wife | Office Help | Texas |
| 40 | Jessie D. Haefner | 60 | Mother | — | Ohio |
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)