BT
Bertha Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mercer-County, New Jersey
Our Model Tree links this Bertha Thompson across the 1930 and 1940 US Censuses in Mercer-County, New Jersey (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 13-person household.
Age 14
b. ~1926
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, New Jersey |
| Surname | Thompson |
| Given Name | Bertha |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | Black |
| Age | 14 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Trenton City |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Trenton City |
| Est. Birth Year | ~1926 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Bertha | Age | Birth yr |
|---|---|---|---|---|
| Alice Thompson | Daughter | — | 8 | ~1932 |
| Helen Thompson | Daughter | — | 4 | ~1936 |
| Mary Thompson | Daughter | — | 12 | ~1928 |
| Bertha Thompson | Daughter | — | 14 | ~1926 |
| Geneva Thompson | Daughter | — | 1 | ~1939 |
| Sophia Thompson | Daughter | — | 17 | ~1923 |
| Blanche Thompson | Daughter | — | 6 | ~1934 |
| Daniel Thompson | Head | — | 38 | ~1902 |
| Donald Ordine | Other | — | ~1940 | |
| Daniel Thompson | Son | — | 15 | ~1925 |
| Samuel Thompson | Son | — | 22 | ~1918 |
| Joseph Thompson | Son | — | 10 | ~1930 |
| Helen Thompson | Spouse | — | 38 | ~1902 |
Census Appearances
1930
Mercer, New …
Daughter, age 4
Mercer, New Jersey · implied b. ~1926 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Bertha |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 4 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | No |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Mercer-County, New …
Daughter, age 14
Mercer-County, New Jersey · implied b. ~1926 — 13 household members
| Surname | Thompson |
| Given Name | Bertha |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | Black |
| Age | 14 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Trenton City |
| 1935 Residence (County) | Mercer |
| Class of Worker | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 Thompson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Bertha Thompson
Daughter · 1940 · age 14 · b. ~1926 · New Jersey
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Sibling
Sophia Thompson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Thompson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Geneva Thompson
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Blanche Thompson
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Thompson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Thompson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Thompson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Thompson
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Samuel Thompson
Sibling · 1940 · age 22
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 — Mercer-County, New Jersey
Open full size
1940 US Federal Census — Mercer-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02437-00014)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Frank Marsh | 10 | son | — | New Jersey |
| 42 | Leonard Marsh | 0 | son | — | New Jersey |
| 43 | Anna Teel | 25 | head | House-Maid | North Carolina |
| 44 | Dorothy Teel | 12 | daughter | — | Maryland |
| 45 | Oscar Teel | 11 | son | — | New Jersey |
| 46 | Florence Teel | 10 | daughter | — | New Jersey |
| 47 | Joseph Teel | 7 | son | — | New Jersey |
| 48 | Charles Teel | 5 | son | — | New Jersey |
| 49 | Harold Brister | 30 | lodger | Handy-Man | New Jersey |
| 50 | Elizabeth Brister | 19 | lodger-wife | — | South Carolina |
| 51 | Harold Jr. Brister | 2 | lodger-son | — | New Jersey |
| 52 | George Brister | 1 | lodger-son | — | New Jersey |
| 53 | Daniel Thompson | 38 | head | Laborer | Virginia |
| 54 | Helen Thompson | 38 | wife | Laundress | Penn. |
| 55 | Samuel Thompson | 22 | son | New Worker | Penn. |
| 56 | Sophia Thompson | 17 | daughter | New Worker | New Jersey |
| 57 | Daniel Jr. Thompson | 15 | son | — | New Jersey |
| 58 | Bertha Thompson THIS PERSON | 14 | daughter | — | New Jersey |
| 59 | Mary Thompson | 12 | daughter | — | New Jersey |
| 60 | Joseph Thompson | 10 | son | — | New Jersey |
| 61 | Alice Thompson | 8 | daughter | — | New Jersey |
| 62 | Blanche Thompson | 6 | daughter | — | New Jersey |
| 63 | Helen Thompson | 4 | daughter | — | New Jersey |
| 64 | Geneva Thompson | 1 | daughter | — | New Jersey |
| 65 | Donald Ordine | 0 | grand-son | — | New Jersey |
| 66 | Peter Brown | 65 | head | — | Virginia |
| 67 | Henrietta Brown | 60 | wife | — | Virginia |
| 68 | Gladys Brown | 27 | daughter | Cook | Virginia |
| 69 | Elmer Brown | 26 | son | Cooks Helper | Virginia |
| 70 | Florence Brown | 24 | daughter-in-law | — | Virginia |
| 71 | Russel Brown | 34 | lodger | Pantry-Cook | New Jersey |
| 72 | Walter Hernes | 36 | step-son | Elevator-Man | Washington D.C. |
| 73 | James Hernes | 14 | grand-son | — | New Jersey |
| 74 | Mildred Hernes | 12 | grand-daughter | — | New Jersey |
| 75 | Audrey Hernes | 10 | grand-daughter | — | New Jersey |
| 76 | Walter Jr. Hernes | 9 | grand-son | — | New Jersey |
| 77 | Mary Gisaway | 86 | lodger | — | New Jersey |
| 78 | William Cosby | 50 | head | Fireman | Georgia |
| 79 | Jessie Cosby | 49 | wife | Maid | Georgia |
| 80 | Lewis Kelly | 23 | head | Truck Driver | New Jersey |
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)