MT
Martha Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Washington-County, Ohio
Our Model Tree links this Martha Thomas across the 1920, 1930 and 1940 US Censuses in Washington-County, Ohio (XGBoost, ~Confirmed), with identified parents Daniel & Daniel — first a daughter (b.~1900), then head of a 2-person household.
Age 40
b. ~1900
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Ohio |
| Surname | Thomas |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Warren Township |
| 1935 Residence (County) | Washington |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Warren Township |
| Est. Birth Year | ~1900 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martha | Age | Birth yr |
|---|---|---|---|---|
| Martha Thomas | Daughter | — | 40 | ~1900 |
| Daniel Thomas | Head | — | 73 | ~1867 |
Census Appearances
1920
Washington, Ohio
Daughter, age 20
Washington, Ohio · implied b. ~1900 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Martha E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read | No |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Washington, Ohio
Daughter, age 30
Washington, Ohio · implied b. ~1900 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Martha E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| 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 40
Washington-County, Ohio · implied b. ~1900 — 2 household members
| Surname | Thomas |
| Given Name | Martha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Warren Township |
| 1935 Residence (County) | Washington |
| Class of Worker | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| 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 Martha Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Daniel Thomas (~0.92 confidence) and father Daniel Thomas (~0.92 confidence) and father Daniel Thomas (~0.92 confidence) and mother Ella Thomas (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Daniel Thomas
b. ~1867
Source father
● Household
· direct · ~0.92
Father
Daniel Thomas
b. ~1867
Source father
● Household
· direct · ~0.92
Father
Daniel Thomas
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Ella Thomas
b. ~1872
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Martha Thomas
Daughter · 1940 · age 40 · b. ~1900 · Ohio
★ 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 — 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-t0627-03166-00429)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James E. Davis | 6 | Lodger | — | Ohio |
| 2 | James A. B. Morris | 24 | Head | Formsetter | Ohio |
| 3 | Vera M. Morris | 21 | Wife | — | West Virginia |
| 4 | Betty J. Morris | 3 | Daughter | — | Ohio |
| 5 | Charles A. Morris | 2 | Son | — | Ohio |
| 6 | George T. Davis | 69 | Head | Farmer | Ohio |
| 7 | Nellie M. Davis | 63 | Wife | — | Ohio |
| 8 | Warren W. Davis | 24 | Son | Farmer | Ohio |
| 9 | Helen M. Davis | 23 | Daughter | — | Ohio |
| 10 | Daniel Thomas | 73 | Head | Farmer | Ohio |
| 11 | Martha Thomas THIS PERSON | 40 | Daughter | — | Ohio |
| 12 | Mary E. Sims | 66 | Head | — | Ohio |
| 13 | Glen B. Sims | 33 | Son | Farmer | West Virginia |
| 14 | William Robertson | 54 | Head | Farmer | Ohio |
| 15 | Elizabeth Robertson | 46 | Wife | — | Ireland |
| 16 | Easter M. Robertson | 18 | Daughter | — | Ohio |
| 17 | Clifford L. Turrill | 24 | Head | Messenger | Ohio |
| 18 | Ethel M. Q. Turrill | 24 | Wife | — | Ohio |
| 19 | Martin F. Berry | 64 | Head | Farmer | Ohio |
| 20 | Abbie J. Berry | 63 | Wife | — | Ohio |
| 21 | Ruth M. Berry | 15 | Granddaughter | — | Ohio |
| 22 | Fremont D. Coffman | 74 | Head | Farmer | Ohio |
| 23 | Etta S. D. Coffman | 80 | Sister | — | Ohio |
| 24 | Clemine D. Coffman | 39 | Son | Farmer | Ohio |
| 25 | Mary L. Coffman | 40 | Daughter-in-law | — | Ohio |
| 26 | Ruth E. Coffman | 16 | Granddaughter | — | Ohio |
| 27 | Ralph D. Coffman | 10 | Grandson | — | Ohio |
| 28 | Hugh D. Coffman | 7 | Grandson | — | Ohio |
| 29 | Robert R. Coffman | 2 | Grandson | — | Ohio |
| 30 | Ellis E. Reed | 55 | Head | Farmer | Ohio |
| 31 | Rosa L. Reed | 45 | Wife | — | Ohio |
| 32 | James O. Q. Wise | 42 | Head | Labour | West Virginia |
| 33 | Francis L. Wise | 39 | Wife | — | West Virginia |
| 34 | Elmer W. Wagner | 41 | Head | Farmer | Ohio |
| 35 | Mable Wagner | 41 | Wife | — | Ohio |
| 36 | George R. Harris | 72 | Head | Farmer | Ohio |
| 37 | Kenneth H. Johnson | 36 | Son-in-law | Farmer | Ohio |
| 38 | Marie L. Johnson | 39 | Daughter | — | Ohio |
| 39 | Ava P. Johnson | 12 | Granddaughter | — | Ohio |
| 40 | Junior K. Johnson | 10 | Grandson | — | Ohio |
Pedigree Summary
Martha
Gen 1 · 4 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)