HB
Harold Brown — 1940 US Census Record
Model Tree available1940 United States Federal Census · Delaware-County, Pennsylvania
Our Model Tree links this Harold Brown across the 1920, 1930 and 1940 US Censuses in Delaware-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Mary & Charles — first a son (b.~1907), then head of a 5-person household.
Age 33
b. ~1907
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Pennsylvania |
| Surname | Brown |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Chester city |
| 1935 Residence (County) | Delaware |
| Additional Details | |
| Occupation | Laborer |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 988 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Laborer |
| Township / Ward | Chester City |
| Est. Birth Year | ~1907 |
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 Harold | Age | Birth yr |
|---|---|---|---|---|
| Katherine Brown | Daughter | — | 24 | ~1916 |
| Charles Brown | Head | — | 58 | ~1882 |
| Harold Brown | Son | — | 33 | ~1907 |
| Clifford Brown | Son | — | 28 | ~1912 |
| Eva Brown | Spouse | — | 54 | ~1886 |
Census Appearances
1920
Philadelphia, Pennsylvania
Son, age 12
Philadelphia, Pennsylvania · implied b. ~1908 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Delaware, Pennsylvania
Son, age 23
Delaware, Pennsylvania · implied b. ~1907 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Laborer |
| Industry | General |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Delaware-County, Pennsylvania
Son, age 33
Delaware-County, Pennsylvania · implied b. ~1907 — 5 household members
| Surname | Brown |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Chester city |
| 1935 Residence (County) | Delaware |
| Occupation | Laborer |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 988 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Harold Brown across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: mother Mary Brown (~0.92 confidence) and father Charles Brown (~0.92 confidence) and mother Eva Brown (~0.92 confidence) and mother Eva Brown (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Brown
b. ~1883
Source mother
● Household
· direct · ~0.92
Father
Charles Brown
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Eva Brown
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Eva Brown
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Brown
Son · 1940 · age 33 · b. ~1907 · Pennsylvania
★ You are viewing this record
Sibling
Clifford Brown
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Katherine Brown
Sibling · 1940 · age 24
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 — Delaware-County, Pennsylvania
Open full size
1940 US Federal Census — Delaware-County, Pennsylvania
Page Contents
23 people indexed on this census page (nara:1940:m-t0627-03489-00077)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles Brown | 58 | Head | Janitor | Pennsylvania |
| 2 | Eva Brown | 54 | Wife | — | Pennsylvania |
| 3 | Harold Brown THIS PERSON | 33 | Son | Laborer | Pennsylvania |
| 4 | Clifford Brown | 28 | Son | Cleaner | Pennsylvania |
| 5 | Katherine Brown | 24 | Daughter | — | Pennsylvania |
| 6 | Elizabeth Roashers | 58 | Head | — | New Jersey |
| 7 | Thomas Roashers | 60 | Husband | Helper | N. Carolina |
| 8 | Mary Jacobs | 31 | Daughter | — | Pennsylvania |
| 9 | Aaron Jacobs | 35 | Son-in-law | Laborer | Pennsylvania |
| 10 | Arelena Jacobs | 5 | G. daughter | — | Pennsylvania |
| 11 | Jacolin Jacobs | 10 | G. daughter | — | Pennsylvania |
| 12 | Wanda Jacobs | 8 | G. daughter | — | Pennsylvania |
| 13 | Arthur Thomas | 35 | Head | Laborer | Maryland |
| 14 | Sidney Smith | 42 | Roomer | Laborer | Virginia |
| 15 | Raymond Holmes | 48 | Roomer | Laborer | Maryland |
| 16 | Annie Lin Cade | 46 | Head | — | Maryland |
| 17 | Helena Lin Cade | 22 | Daughter | Teacher | Pennsylvania |
| 18 | James Davis | 48 | Head | Laborer | S. Carolina |
| 19 | Edward Holmes | 46 | Head | Laborer | Maryland |
| 20 | Ola Holmes | 30 | Wife | — | Maryland |
| 21 | Alonzo Williams | 40 | Head | Laborer | Maryland |
| 22 | Nancy Williams | 39 | Wife | — | Maryland |
| 23 | Alonzo Williams | 7 | Son | — | Pennsylvania |
Pedigree Summary
Harold + 2 siblings
Gen 1 · 4 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)