JB
Jacob Brown — 1940 US Census Record
Model Tree available1940 United States Federal Census · Delaware-County, Pennsylvania
Our Model Tree links this Jacob Brown across the 1920, 1930 and 1940 US Censuses in Delaware-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Leon & Anna — first a head (b.~1894), then head of a 5-person household.
Age 46
b. ~1894
Male
Head
Born: Russia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Pennsylvania |
| Surname | Brown |
| Given Name | Jacob |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Russia |
| 1935 Residence (City) | Chester |
| 1935 Residence (County) | Delaware |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Produce Dealer |
| Industry | Wholesale Fruit |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 156 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
| Occupation | Produce Dealer |
| Township / Ward | Chester |
| Est. Birth Year | ~1894 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Jacob | Age | Birth yr |
|---|---|---|---|---|
| Jacob Brown | Head | — | 46 | ~1894 |
| Dora Brown | Spouse | — | 35 | ~1905 |
| Joseph Brown | Son | — | 16 | ~1924 |
| Ella Collick | Other | — | 22 | ~1918 |
| Leonard Brown | Son | — | 6 | ~1934 |
Census Appearances
1920
Philadelphia, Pennsylvania
Son, age 25
Philadelphia, Pennsylvania · implied b. ~1895 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Jacob S. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Russia |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | salesman |
| Industry | Real Estate |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Russian |
| Birth Country | Russia |
| Year of Naturalization | 1912 |
| Birthplace (normalized) | russia |
1930
Delaware, Pennsylvania
Head, age 36
Delaware, Pennsylvania · implied b. ~1894 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Jacob |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Russia |
| Naturalization Status | Naturalized |
| Year of Immigration | 1916 |
| Age at First Marriage | 33 |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | Proprietor |
| Industry | Fruit Market |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Mother Tongue | Hebrew |
| Home Owned/Rented | O |
| Home Value / Rent | 10500 |
| Radio Set | R |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
1940
Delaware-County, Pennsylvania
Head, age 46
Delaware-County, Pennsylvania · implied b. ~1894 — 5 household members
| Surname | Brown |
| Given Name | Jacob |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Russia |
| 1935 Residence (City) | Chester |
| 1935 Residence (County) | Delaware |
| Naturalization Status | Naturalized |
| Occupation | Produce Dealer |
| Industry | Wholesale Fruit |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 156 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth Country | Russia |
| Birthplace (normalized) | russia |
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 Jacob Brown across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Leon Brown (~0.60 confidence) and mother Anna Brown (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.76
Father
Leon Brown
b. ~1883
Source father
● Household
· direct · ~0.6
Mother
Anna Brown
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Jacob Brown
Head · 1940 · age 46 · b. ~1894 · Pennsylvania
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Delaware-County, Pennsylvania
Open full size
1940 US Federal Census — Delaware-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03487-00389)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Rose Staskin | 40 | Wife | — | Pennsylvania |
| 42 | Bernard Staskin | 16 | Son | Clerk | Pennsylvania |
| 43 | Eugene Staskin | 14 | Son | — | Pennsylvania |
| 44 | Jacob Brown THIS PERSON | 46 | Head | Produce Dealer | Russia |
| 45 | Dora Brown | 35 | Wife | — | Russia |
| 46 | Joseph Brown | 16 | Son | — | Pennsylvania |
| 47 | Leonard Brown | 6 | Son | — | Pennsylvania |
| 48 | Ella Collick | 22 | Maid | Servant | So Carolina |
| 49 | Maurice Swimmer | 40 | Head | Realtor | New York |
| 50 | Sophia Swimmer | 38 | Wife | — | Delaware |
| 51 | Allan Swimmer | 13 | Son | — | Delaware |
| 52 | Harry Swimmer | 10 | Son | — | Pennsylvania |
| 53 | Frank Waxman | 39 | Head | Mens Furn. | Russia |
| 54 | Clara Waxman | 36 | Wife | — | Russia |
| 55 | Shirley Waxman | 18 | Daughter | — | Penna |
| 56 | Millicent Waxman | 15 | Daughter | — | Penna |
| 57 | Beverly Waxman | 12 | Daughter | — | Penna |
| 58 | David Gilchrist | 41 | Head | Hydraulic Eng. | New York |
| 59 | Katherine Gilchrist | 38 | Wife | — | New York |
| 60 | Mary Gilchrist | 16 | Daughter | — | New York |
| 61 | Audrey Gilchrist | 14 | Daughter | — | New York |
| 62 | Joyce Gilchrist | 11 | Daughter | — | Michigan |
| 63 | David Gilchrist | 8 | Son | — | Michigan |
| 64 | Barbara Gilchrist | 5 | Daughter | — | Michigan |
| 65 | John Callaghan | 44 | Head | Yield Clerk | Penna |
| 66 | Mary Callaghan | 38 | Wife | — | Penna |
| 67 | Kathleen Callaghan | 5 | Daughter | — | Penna |
| 68 | Joseph Hallett | 27 | Head | Clothing | Penna |
| 69 | Rose Hallett | 24 | Wife | — | Maryland |
| 70 | Shirley Hallett | 4 | Daughter | — | Virginia |
| 71 | Pearley Hallett | 2 | Daughter | — | Virginia |
| 72 | Louis Hallett | 0 | Son | — | Virginia |
| 73 | Robert Keating | 32 | Head | Laboratory Asst. | Penna |
| 74 | Frances Keating | 30 | Wife | — | Penna |
| 75 | Patricia Keating | 6 | Daughter | — | Penna |
| 76 | Cecelia Doyle | 60 | Mother in law | — | Penna |
| 77 | Helen Doyle | 32 | Sister in law | Operator | Penna |
| 78 | Clara Doyle | 28 | Sister in law | Stenographer | Penna |
| 79 | William Feinberg | 39 | Head | Proprietor | Delaware |
| 80 | Mary Feinberg | 32 | Wife | — | New York |
Pedigree Summary
Jacob
Gen 1 · 2 parents
~0.76
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)