AF
Alice Foster — 1940 US Census Record
Model Tree available1940 United States Federal Census · New-Castle-County, Delaware
Our Model Tree links this Alice Foster across the 1920, 1930 and 1940 US Censuses in New-Castle-County, Delaware (XGBoost, ~Confirmed), with identified parents John & John — first a daughter (b.~1915), then head of a 6-person household.
Age 25
b. ~1915
Female
Daughter
Born: Delaware
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | New-Castle-County, Delaware |
| Surname | Foster |
| Given Name | Alice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | Pencader Hundred |
| 1935 Residence (County) | New Castle |
| Additional Details | |
| Occupation | Sorter |
| Industry | Hosiery Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 624 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Occupation | Sorter |
| Township / Ward | Pencader Hundred |
| Est. Birth Year | ~1915 |
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 Alice | Age | Birth yr |
|---|---|---|---|---|
| Donald Foster | Son | — | 7 | ~1933 |
| Alfred Foster | Son | — | 13 | ~1927 |
| Alice Foster | Daughter | — | 25 | ~1915 |
| John Foster | Head | — | 53 | ~1887 |
| John Foster | Son | — | 17 | ~1923 |
| Mary Foster | Spouse | — | 47 | ~1893 |
Census Appearances
1920
New Castle, …
Daughter, age 5
New Castle, Delaware · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | Alice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Delaware |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1930
New Castle, …
Daughter, age 16
New Castle, Delaware · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | Alice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1940
New-Castle-County, Delaware
Daughter, age 25
New-Castle-County, Delaware · implied b. ~1915 — 6 household members
| Surname | Foster |
| Given Name | Alice |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | Pencader Hundred |
| 1935 Residence (County) | New Castle |
| Occupation | Sorter |
| Industry | Hosiery Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 624 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
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 Alice Foster across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Foster (~0.92 confidence) and father John Foster (~0.92 confidence) and father John Foster (~0.92 confidence) and mother Mary Foster (~0.92 confidence) and mother Mary Foster (~0.92 confidence) and mother Mary Foster (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Foster
b. ~1886
Source father
● Household
· direct · ~0.92
Father
John Foster
b. ~1887
Source father
● Household
· direct · ~0.92
Father
John Foster
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Mary Foster
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Mary Foster
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Mary Foster
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Alice Foster
Daughter · 1940 · age 25 · b. ~1915 · Delaware
★ You are viewing this record
Sibling
Alfred Foster
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Foster
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Foster
Sibling · 1940 · age 17
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 — New-Castle-County, Delaware
Open full size
1940 US Federal Census — New-Castle-County, Delaware
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00546-00043)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Theodore Korkowski | 23 | Head | Machinist | Penna |
| 2 | E. D. Milbourn | 43 | Head | Proprietor | Penna |
| 3 | Jessie Milbourn | 41 | Wife | — | Penna |
| 4 | Levi Lyle | 52 | Farmer | Farmer | Penna |
| 5 | Paul Toddy | 28 | Houseman | Houseman | Maryland |
| 6 | Harry Hobson | 72 | Head | Farmer | Delaware |
| 7 | Harlan Hobson | 42 | Son | Mechanic | Delaware |
| 8 | Purley Mccormick | 45 | Son-in-law | Carpenter | Delaware |
| 9 | Mary Mccormick | 45 | Daughter | — | Delaware |
| 10 | Romayne Mccormick | 8 | Granddaughter | — | Delaware |
| 11 | Alice Hammell | 26 | Daughter | — | Delaware |
| 12 | Jane Hammell | 1 | Granddaughter | — | Delaware |
| 13 | Ward Reiff | 45 | Head | Farmer | Penna |
| 14 | Gloria Reiff | 42 | Wife | — | Maryland |
| 15 | William Reiff | 16 | Son | — | Delaware |
| 16 | Russell Tomlinson | 22 | Head | Farm Laborer | Virginia |
| 17 | Anna M. Tomlinson | 19 | Wife | — | Penna |
| 18 | Russell Jr. Tomlinson | 1 | Son | — | Delaware |
| 19 | Matthew Ralston | 71 | Head | Farmer | Delaware |
| 20 | Mary A. Ralston | 65 | Wife | — | Penna |
| 21 | Joseph M. Ralston | 30 | Son | Farmish Helper | Delaware |
| 22 | Ann N. Ralston | 34 | Daughter | Teacher | Delaware |
| 23 | Nell James Pott | 50 | Head | Gardener | Penna |
| 24 | Lorraine Pott | 40 | Wife | — | New York |
| 25 | James Jr. Pott | 17 | Son | New Worker | Penna |
| 26 | Richard K. Pott | 15 | Son | New Worker | New York |
| 27 | John A. Foster | 53 | Head | Gardener | Penna |
| 28 | Mary S. Foster | 47 | Wife | — | Delaware |
| 29 | Alice Foster THIS PERSON | 25 | Daughter | Sorter | Delaware |
| 30 | John Foster | 17 | Son | New Worker | Delaware |
| 31 | Alfred Foster | 13 | Son | — | Delaware |
| 32 | Donald Foster | 7 | Son | — | Delaware |
| 33 | Joseph Haver | 72 | Head | Laborer | Germany |
| 34 | Charles Haver | 47 | Son | Farm Laborer | Penna |
| 35 | Robert Haver | 40 | Son | Farm Laborer | Penna |
| 36 | John Purdy | 74 | Head | — | Penna |
| 37 | Almond Winder | 39 | Head | Truck Driver | Maryland |
| 38 | Lena Winder | 26 | Wife | Laundress | Penna |
| 39 | Leoma Winder | 7 | Daughter | — | Delaware |
| 40 | Louise Winder | 3 | Daughter | — | Delaware |
Pedigree Summary
Alice + 3 siblings
Gen 1 · 6 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)