TN
Thomas Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Delaware-County, Ohio
Our Model Tree links this Thomas Nelson across the 1920, 1930 and 1940 US Censuses in Delaware-County, Ohio (XGBoost, ~Confirmed), with identified parents William & Rosa — first a son (b.~1918), then head of a 6-person household.
Age 22
b. ~1918
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Ohio |
| Surname | Nelson |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Brown Twp |
| 1935 Residence (County) | Delaware |
| Additional Details | |
| Occupation | Student |
| Industry | St Mary H.S. |
| Highest Grade | H-3 |
| 1935 Residence | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Student |
| Township / Ward | Brown 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Mary Nelson | Daughter | — | 31 | ~1909 |
| William Nelson | Head | — | 62 | ~1878 |
| Patrick Nelson | Other | — | 63 | ~1877 |
| Thomas Nelson | Son | — | 22 | ~1918 |
| John Nelson | Son | — | 25 | ~1915 |
| Rose Nelson | Spouse | — | 52 | ~1888 |
Census Appearances
1920
Delaware, Ohio
Son, age 2
Delaware, Ohio · implied b. ~1918 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Thomas J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Delaware, Ohio
Son, age 11
Delaware, Ohio · implied b. ~1919 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Thomas A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| 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
Delaware-County, Ohio
Son, age 22
Delaware-County, Ohio · implied b. ~1918 — 6 household members
| Surname | Nelson |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Brown Twp |
| 1935 Residence (County) | Delaware |
| Occupation | Student |
| Industry | St Mary H.S. |
| Highest Grade | H-3 |
| 1935 Residence | Ohio |
| 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 Thomas Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Nelson (~0.92 confidence) and mother Rosa Nelson (~0.92 confidence) and mother Rose Nelson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Nelson
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Rosa Nelson
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Rose Nelson
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Nelson
Son · 1940 · age 22 · b. ~1918 · Ohio
★ You are viewing this record
Sibling
John Nelson
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Nelson
Sibling · 1940 · age 31
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 — Delaware-County, Ohio
Open full size
1940 US Federal Census — Delaware-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03062-00083)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Everett A. Keller | 46 | Head | Farmer | Ohio |
| 2 | Clara M. Keller | 44 | Wife | Housekeeper | Ohio |
| 3 | Glenn T. Sheets | 20 | Son | Farmer | Ohio |
| 4 | George A. Sheets | 48 | Head | Farmer | Ohio |
| 5 | Margaret Sheets | 43 | Wife | Housekeeper | Ohio |
| 6 | Rachel Sheets | 7 | Daughter | — | Ohio |
| 7 | Merril Sheets | 5 | Son | — | Ohio |
| 8 | Merlin Sheets | 5 | Son | — | Ohio |
| 9 | Leonise Sheets | 49 | Sister | Housekeeper | Ohio |
| 10 | Mary O'Connell | 69 | Head | Housekeeper | Ohio |
| 11 | Paul O'Connell | 35 | Son | Farmer | Ohio |
| 12 | Grace O'Connell | 24 | Wife | Housekeeper | Ohio |
| 13 | Fred Blem | 52 | Boarder | Laborer | Ohio |
| 14 | William Nelson | 62 | Head | Farmer | Ohio |
| 15 | Rose Nelson | 52 | Wife | Housekeeper | Ohio |
| 16 | Mary Nelson | 31 | Daughter | Saleswoman | Ohio |
| 17 | John Nelson | 25 | Son | Farmer | Ohio |
| 18 | Thomas Nelson THIS PERSON | 22 | Son | Student | Ohio |
| 19 | Patrick Nelson | 63 | Brother | Farmer | Ohio |
| 20 | John Ward | 54 | Head | Farmer | Ohio |
| 21 | Martha Ward | 53 | Wife | Housekeeper | Ohio |
| 22 | John Frances Ward | 29 | Son | Farmer | Ohio |
| 23 | Loretta Ward | 26 | Daughter | Housekeeper | Ohio |
| 24 | Georgia Ward | 23 | Daughter | Student Nurse | Ohio |
| 25 | Ben Fox | 47 | Head | Laborer | Ohio |
| 26 | Lucinda Fox | 45 | Wife | Housekeeper | Ohio |
| 27 | David Fox | 22 | Son | Farm Laborer | Ohio |
| 28 | Dewey Fox | 21 | Son | Farm Laborer | Ohio |
| 29 | Wanda Fox | 19 | Daughter | Housekeeper | Ohio |
| 30 | Ivadelle Fox | 17 | Daughter | Student | Pennsylvania |
| 31 | Joe Fox | 15 | Son | Student | Pennsylvania |
| 32 | Lydia Fox | 13 | Daughter | — | Ohio |
| 33 | Joseph Moore | 41 | Head | Laborer | Ohio |
| 34 | Anne Moore | 40 | Wife | Housekeeper | Ohio |
| 35 | Herbert Moore | 17 | Son | — | Ohio |
| 36 | Betty Lou Moore | 12 | Daughter | — | Ohio |
| 37 | George Nelson | 56 | Head | Farmer | Ohio |
| 38 | John Nelson | 17 | Son | Student | Ohio |
| 39 | Milo Grawer | 27 | Head | Laborer | Ohio |
| 40 | Emma Gephart | 66 | Head | Housekeeper | Ohio |
Pedigree Summary
Thomas + 2 siblings
Gen 1 · 3 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)