BT
Bertha Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Erie-County, New York
Our Model Tree links this Bertha Thomas across the 1930 and 1940 US Censuses in Erie-County, New York (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 10-person household.
Age 15
b. ~1925
Female
Daughter
Born: Virginia
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Erie-County, New York |
| Surname | Thomas |
| Given Name | Bertha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Buffalo city |
| 1935 Residence (County) | Erie |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Township / Ward | Buffalo City |
| Est. Birth Year | ~1925 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Bertha | Age | Birth yr |
|---|---|---|---|---|
| Solphono Thomas | Son | — | 16 | ~1924 |
| Bessie Thomas | Spouse | — | 39 | ~1901 |
| Lander Thomas | Head | — | 45 | ~1895 |
| Jacob Thomas | Son | — | 15 | ~1925 |
| Kenneth Thomas | Son | — | 13 | ~1927 |
| Bertha Thomas | Daughter | — | 15 | ~1925 |
| Edward Thomas | Son | — | 10 | ~1930 |
| Dorothy Thomas | Daughter | — | 5 | ~1935 |
| Ben Thomas | Son | — | 2 | ~1938 |
| Lander Thomas | Son | — | 18 | ~1922 |
Census Appearances
1930
Erie, New …
Daughter, age 8
Erie, New York · implied b. ~1922 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Bertha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Can Read/Write | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Erie-County, New …
Daughter, age 15
Erie-County, New York · implied b. ~1925 — 10 household members
| Surname | Thomas |
| Given Name | Bertha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Buffalo city |
| 1935 Residence (County) | Erie |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
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 Bertha Thomas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Bertha Thomas
Daughter · 1940 · age 15 · b. ~1925 · New York
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Sibling
Edward Thomas
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ben Thomas
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Thomas
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Solphono Thomas
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Thomas
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lander Thomas
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jacob Thomas
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 — Erie-County, New York
Open full size
1940 US Federal Census — Erie-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02825-00466)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anna Leonard | 29 | Head | — | South Carolina |
| 42 | George Leonard | 16 | Son | — | South Carolina |
| 43 | Corrie Leonard | 10 | Daughter | — | New York |
| 44 | Helen Leonard | 11 | Daughter | — | New York |
| 45 | Edward Leonard | 9 | Son | — | New York |
| 46 | Herbert Leonard | 5 | Son | — | New York |
| 47 | Harrison Brown | 44 | Head | Waiter | Kentucky |
| 48 | Keturah Brown | 46 | Wife | — | Florida |
| 49 | Nicholas Brown | 74 | Father | Bar Maid | Missouri |
| 50 | Clarence Benton | 50 | Head | Laborer | Maryland |
| 51 | Lillie Benton | 45 | Wife | — | Alabama |
| 52 | George Franklin | 43 | Head | Case Work | South Carolina |
| 53 | Callie Franklin | 39 | Wife | Domestic | South Carolina |
| 54 | Russell Haston | 47 | Head | Laborer | Arkansas |
| 55 | Ella Haston | 42 | Wife | — | Oklahoma |
| 56 | George Hammonds | 24 | Lodger | Porter | Georgia |
| 57 | Corrie Hammonds | 24 | Lodger | Maid | Georgia |
| 58 | Leonard Edwards | 58 | Head | Cement Finisher | South Carolina |
| 59 | Elizabeth Edwards | 56 | Wife | — | Tennessee |
| 60 | William Jason | 61 | Head | Attorney | New York |
| 61 | May C. Jason | 63 | Sister | — | New York |
| 62 | Sarah Bass | 55 | Head | Caterer | Russia |
| 63 | Myra Bass | 22 | Daughter | Helper | New York |
| 64 | Herbert Bass | 21 | Son | Attorney | Russia |
| 65 | Lander Thomas | 45 | Head | Laborer | Virginia |
| 66 | Bessie Thomas | 39 | Wife | — | Virginia |
| 67 | Lander Thomas | 18 | Son | New Worker | Virginia |
| 68 | Bertha Thomas THIS PERSON | 15 | Daughter | — | Virginia |
| 69 | Solphono Thomas | 16 | Son | — | Virginia |
| 70 | Jacob Thomas | 15 | Son | — | Virginia |
| 71 | Kenneth Thomas | 13 | Son | — | Virginia |
| 72 | Edward Thomas | 10 | Son | — | New York |
| 73 | Dorothy Thomas | 5 | Daughter | — | New York |
| 74 | Ben Thomas | 2 | Son | — | New York |
| 75 | Omega Hyler | 33 | Head | Laborer | South Carolina |
| 76 | Corrie Hyler | 27 | Wife | — | South Carolina |
| 77 | James Jeffery | 24 | Brother | Laborer | Virginia |
| 78 | Edith Jeffery | 32 | Sister | — | South Carolina |
| 79 | Albert Jeffery | 17 | Nephew | New Worker | South Carolina |
| 80 | Revilla Jeffery | 11 | Niece | — | South Carolina |
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)