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Mary Arnold — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Washington-County, Ohio
Our Model Tree links this Mary Arnold across the 1930 and 1940 US Censuses in Washington-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 11-person household.
Age 18
b. ~1922
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Ohio |
| Surname | Arnold |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (County) | Washington |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | Hs 3 |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Warren Township |
| Est. Birth Year | ~1922 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Bertha Arnold | Daughter | — | 3 | ~1937 |
| Mary Arnold | Daughter | — | 18 | ~1922 |
| Irene Arnold | Daughter | — | 11 | ~1929 |
| Allene Arnold | Daughter | — | 11 | ~1929 |
| John Arnold | Head | — | 49 | ~1891 |
| Jerome Arnold | Son | — | 8 | ~1932 |
| William Arnold | Son | — | 22 | ~1918 |
| George Arnold | Son | — | 20 | ~1920 |
| Anthony Arnold | Son | — | 13 | ~1927 |
| James Arnold | Son | — | 15 | ~1925 |
| Virginia Arnold | Spouse | — | 48 | ~1892 |
Census Appearances
1930
Washington, Ohio
Daughter, age 8
Washington, Ohio · implied b. ~1922 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Arnold |
| Given Name | Mary L |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Washington-County, Ohio
Daughter, age 18
Washington-County, Ohio · implied b. ~1922 — 11 household members
| Surname | Arnold |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (County) | Washington |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | Hs 3 |
| 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 Arnold across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Arnold
Daughter · 1940 · age 18 · b. ~1922 · Ohio
★ You are viewing this record
Sibling
Allene Arnold
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Arnold
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anthony Arnold
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Arnold
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Arnold
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jerome Arnold
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bertha Arnold
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Arnold
Sibling · 1940 · age 15
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 — Washington-County, Ohio
Open full size
1940 US Federal Census — Washington-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03166-00414)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Patricia J. Fullerton | 5 | Daughter | — | Ohio |
| 42 | Alfred L. Charmion | 60 | Head | — | California |
| 43 | Nellie M. Charmion | 49 | Wife | Teacher | Pennsylvania |
| 44 | Dorien Charmion | 18 | Daughter | — | Ohio |
| 45 | Hazel J. Charmion | 15 | Daughter | — | Georgia |
| 46 | Howard B. Smith | 55 | Head | Painter | Ohio |
| 47 | Lula B. Smith | 55 | Wife | — | Ohio |
| 48 | Alice V. Hill | 81 | Mother in law | — | Ohio |
| 49 | Samuel E. Tryon | 73 | Head | — | West Virginia |
| 50 | Nettie Tryon | 70 | Wife | — | Ohio |
| 51 | Mattie E. Cornell | 72 | Head | — | West Virginia |
| 52 | Kathleen Webb | 12 | Daughter | — | West Virginia |
| 53 | Daniel H. Reynolds | 59 | Head | Farmer | Ohio |
| 54 | Lottie B. Reynolds | 56 | Wife | — | Ohio |
| 55 | Lawrence P. Reynolds | 30 | Son | Teacher | Ohio |
| 56 | Leona J. Reynolds | 20 | Daughter | — | Ohio |
| 57 | Agnes M. Reynolds | 77 | Head | — | Ohio |
| 58 | Esther A. Reynolds | 66 | Sister | — | Ohio |
| 59 | Hugh G. Stephens | 48 | Head | Laborer | Ohio |
| 60 | Mae V. Stephens | 38 | Wife | — | Ohio |
| 61 | Robert L. Stephens | 19 | Son | Laborer | Ohio |
| 62 | Leona M. Stephens | 16 | Daughter | — | Ohio |
| 63 | Joseph Finkel | 78 | Head | Farmer | Ohio |
| 64 | George L. Finkel | 54 | Son | Laborer | Ohio |
| 65 | Rose C. Finkel | 41 | Niece | — | Ohio |
| 66 | John H. Arnold | 49 | Head | Farmer | Ohio |
| 67 | Virginia M. Arnold | 48 | Wife | — | Ohio |
| 68 | William John Arnold | 22 | Son | Machinist | Ohio |
| 69 | George R. Arnold | 20 | Son | Laborer | Ohio |
| 70 | Mary L. Arnold THIS PERSON | 18 | Daughter | — | Ohio |
| 71 | James J. Arnold | 15 | Son | — | Ohio |
| 72 | Anthony V. Arnold | 13 | Son | — | Ohio |
| 73 | Allene L. Arnold | 11 | Daughter | — | Ohio |
| 74 | Irene L. Arnold | 11 | Daughter | — | Ohio |
| 75 | Jerome C. Arnold | 8 | Son | — | Ohio |
| 76 | Bertha V. Arnold | 3 | Daughter | — | Ohio |
| 77 | William W. Pierson | 61 | Head | Laborer | Ohio |
| 78 | Fannie O. Pierson | 47 | Wife | — | England |
| 79 | John W. Pierson | 18 | Son | — | Ohio |
| 80 | William R. Harris | 77 | Head | Farmer | Ohio |
Related Census Records
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)