GT
Gertrude Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Montgomery-County, Pennsylvania
Our Model Tree links this Gertrude Thompson across the 1930 and 1940 US Censuses in Montgomery-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 9-person household.
Age 17
b. ~1923
Female
Daughter
Born: Virginia
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Pennsylvania |
| Surname | Thompson |
| Given Name | Gertrude |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Ambler |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Occupation | New Worker |
| Hours Worked | 42 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same House |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Occupation | New Worker |
| Township / Ward | Ambler |
| Est. Birth Year | ~1923 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Gertrude | Age | Birth yr |
|---|---|---|---|---|
| Arthur Thompson | Head | — | 48 | ~1892 |
| Geneva Thompson | Daughter | — | 7 | ~1933 |
| Gertrude Thompson | Daughter | — | 17 | ~1923 |
| Maisie Thompson | Daughter | — | 13 | ~1927 |
| Romaine Thompson | Daughter | — | 11 | ~1929 |
| John Thompson | Son | — | 15 | ~1925 |
| Charlotte Thompson | Daughter | — | 6 | ~1934 |
| Dorothy Thompson | Daughter | — | 5 | ~1935 |
| Charlotte Thompson | Spouse | — | 47 | ~1893 |
Census Appearances
1930
Montgomery, Pennsylvania
Daughter, age 6
Montgomery, Pennsylvania · implied b. ~1924 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Gertrude |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Montgomery-County, Pennsylvania
Daughter, age 17
Montgomery-County, Pennsylvania · implied b. ~1923 — 9 household members
| Surname | Thompson |
| Given Name | Gertrude |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | Ambler |
| 1935 Residence (County) | Montgomery |
| Occupation | New Worker |
| Hours Worked | 42 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same House |
| 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 Gertrude Thompson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Gertrude Thompson
Daughter · 1940 · age 17 · b. ~1923 · Pennsylvania
★ You are viewing this record
Sibling
Romaine Thompson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maisie Thompson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Thompson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charlotte Thompson
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Geneva Thompson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Thompson
Sibling · 1940 · age 5
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 — Montgomery-County, Pennsylvania
Open full size
1940 US Federal Census — Montgomery-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03577-00075)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank Prowl | 26 | Brother-in-law | Laborer | Pennsylvania |
| 2 | Doris Prowl | 19 | Sister-in-law | — | Pennsylvania |
| 3 | James Dean | 37 | Head | Laborer | Virginia |
| 4 | Carrie Dean | 35 | Wife | — | Virginia |
| 5 | James Dean | 15 | Son | — | Pennsylvania |
| 6 | Ellis Dean | 12 | Son | — | Pennsylvania |
| 7 | David Dean | 11 | Son | — | Pennsylvania |
| 8 | Sylvester Dean | 7 | Son | — | Pennsylvania |
| 9 | Daniel Dean | 4 | Son | — | Pennsylvania |
| 10 | Moses Mckinney | 45 | Brother-in-law | Laborer | Virginia |
| 11 | Mary Johnston | 27 | Head | Servant | Virginia |
| 12 | James E. Johnston | 11 | Son | — | Pennsylvania |
| 13 | George Johnston | 9 | Son | — | Pennsylvania |
| 14 | Emily Johnson | 54 | Mother | — | Virginia |
| 15 | Herman Lee | 30 | Lodger | Handyman | Virginia |
| 16 | Edward Lee | 33 | Uncle | Laborer | Virginia |
| 17 | Arthur Samuels | 30 | Head | Laborer | Maryland |
| 18 | Mary A. Samuels | 30 | Wife | — | Pennsylvania |
| 19 | Arthur Samuels | 13 | Son | — | Pennsylvania |
| 20 | Morris Samuels | 8 | Son | — | Pennsylvania |
| 21 | Ardelia Samuels | 6 | Daughter | — | Pennsylvania |
| 22 | Bernard Samuels | 5 | Son | — | Pennsylvania |
| 23 | Mary A. Samuels | 16 | Daughter | — | Pennsylvania |
| 24 | James E. Samuels | 3 | Son | — | Pennsylvania |
| 25 | Salvatore Pernoso | 60 | Head | Laborer | Italy |
| 26 | Arthur Thompson | 48 | Head | Laborer | Virginia |
| 27 | Charlotte Thompson | 47 | Wife | — | Virginia |
| 28 | Gertrude Thompson THIS PERSON | 17 | Daughter | New Worker | Virginia |
| 29 | John Thompson | 15 | Son | — | Virginia |
| 30 | Maisie Thompson | 13 | Daughter | — | Pennsylvania |
| 31 | Romaine Thompson | 11 | Daughter | — | Pennsylvania |
| 32 | Geneva Thompson | 7 | Daughter | — | Pennsylvania |
| 33 | Charlotte Thompson | 6 | Daughter | — | Pennsylvania |
| 34 | Dorothy Thompson | 5 | Daughter | — | Pennsylvania |
| 35 | Rocco Santoro | 58 | Head | Sewing Machine | Italy |
| 36 | Angelina Santoro | 51 | Wife | — | Italy |
| 37 | Anna Santoro | 26 | Daughter | Textile | Pennsylvania |
| 38 | Anthony Gernon | 73 | Lodger | — | Italy |
| 39 | George Ball | 49 | Head | Laborer | Virginia |
| 40 | Lillie Ball | 49 | Wife | — | Pennsylvania |
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)