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Martha Brown — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Martha Brown across the 1920, 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1899), then head of a 8-person household.
Age 41
b. ~1899
Female
Spouse
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Brown |
| Given Name | Martha |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | Black |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Phila |
| 1935 Residence (County) | Phila |
| Additional Details | |
| Occupation | House-work |
| Industry | Domestic |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 480 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | House-Work |
| Township / Ward | Phila |
| Est. Birth Year | ~1899 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martha | Age | Birth yr |
|---|---|---|---|---|
| Evelyn Brown | Daughter | — | 12 | ~1928 |
| Lois Brown | Daughter | — | 6 | ~1934 |
| Laura Brown | Daughter | — | 2 | ~1938 |
| Louis Brown | Head | — | 41 | ~1899 |
| William Brown | Son | — | 23 | ~1917 |
| Lawrence Brown | Son | — | 21 | ~1919 |
| Louis Brown | Son | — | 26 | ~1914 |
| Martha Brown | Spouse | — | 41 | ~1899 |
Census Appearances
1920
Philadelphia, Pennsylvania
Spouse, age 25
Philadelphia, Pennsylvania · implied b. ~1895 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Philadelphia, Pennsylvania
Spouse, age 34
Philadelphia, Pennsylvania · implied b. ~1896 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 21 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Philadelphia-County, Pennsylvania
Spouse, age 41
Philadelphia-County, Pennsylvania · implied b. ~1899 — 8 household members
| Surname | Brown |
| Given Name | Martha |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | Black |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Phila |
| 1935 Residence (County) | Phila |
| Occupation | House-work |
| Industry | Domestic |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 480 |
| Highest Grade | No 6 |
| 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 Martha Brown across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Martha Brown
Spouse · 1940 · age 41 · b. ~1899 · 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 — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03713-00543)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nelson Jr. Blackwell | 12 | son | — | Pennsylvania |
| 2 | John Blackwell | 6 | son | — | Pennsylvania |
| 3 | Robert Blackwell | 4 | son | — | Pennsylvania |
| 4 | William Chapman | 50 | head | Chauffeur | Pennsylvania |
| 5 | Della Chapman | 38 | wife | House-Wife | Pennsylvania |
| 6 | Gladys Chapman | 26 | daughter | House-Work | Pennsylvania |
| 7 | William Chapman | 15 | son | — | Pennsylvania |
| 8 | James Chapman | 13 | son | — | Pennsylvania |
| 9 | Charles Chapman | 11 | son | — | Pennsylvania |
| 10 | Clarence Chapman | 9 | son | — | Pennsylvania |
| 11 | Alfred Johnson | 67 | head | Labor | Pennsylvania |
| 12 | Hester Johnson | 68 | wife | House-Wife | Virginia |
| 13 | Herman Major | 53 | head | Plaster | South Carolina |
| 14 | Elizabeth Major | 38 | wife | House-Wife | South Carolina |
| 15 | Virginia Major | 24 | daughter | House-Work | South Carolina |
| 16 | Ruby Major | 15 | daughter | — | South Carolina |
| 17 | Sarah Macdonald | 30 | lodger | Seamstress | South Carolina |
| 18 | Clarence Cook | 57 | head | Labor | Maryland |
| 19 | Martha Cook | 55 | wife | House-Wife | Maryland |
| 20 | Elizabeth Oliver | 24 | lodger | House-Work | Maryland |
| 21 | Harrell Evans | 25 | lodger | Presser | Virginia |
| 22 | Wilson Harris | 30 | head | Clerk | Maryland |
| 23 | Ruth Harris | 21 | wife | House-Wife | Virginia |
| 24 | John Jackson | 57 | lodger | Labor | Virginia |
| 25 | Louis Brown | 41 | head | Labor | New Jersey |
| 26 | Martha Brown THIS PERSON | 41 | wife | House-Work | Pennsylvania |
| 27 | Louis Brown | 26 | son | Office Clerk | New York |
| 28 | William Brown | 23 | son | Labor | Pennsylvania |
| 29 | Lawrence Brown | 21 | son | Salesman | Pennsylvania |
| 30 | Evelyn Brown | 12 | daughter | — | Pennsylvania |
| 31 | Lois Brown | 6 | daughter | — | Pennsylvania |
| 32 | Laura Brown | 2 | daughter | — | Pennsylvania |
| 33 | Frederick Ford | 70 | head | — | Pennsylvania |
| 34 | Arthur James | 29 | lodger | Labor | Pennsylvania |
| 35 | Robert Powell | 31 | head | Porter Housework | Virginia |
| 36 | Essie Powell | 31 | wife | House-Wife | Georgia |
| 37 | Jennie Cook | 30 | lodger | Seamstress | Georgia |
| 38 | Walter Scott | 26 | lodger | Labor | Georgia |
| 39 | Rodger Oliver | 28 | lodger | Porter Housework | Florida |
| 40 | Nathaniel Davis | 44 | head | Salesman | New York |
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)