MC
Mary Crawford — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Chester-County, South Carolina
Our Model Tree links this Mary Crawford across the 1920, 1930 and 1940 US Censuses in Chester-County, South Carolina (XGBoost, ~Confirmed) — first a spouse (b.~1900), then head of a 6-person household.
Age 40
b. ~1900
Female
Spouse
Born: South Carolina
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Chester-County, South Carolina |
| Surname | Crawford |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 40 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | Blackstock |
| Additional Details | |
| Occupation | Helper |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 30 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
| Occupation | Helper |
| Township / Ward | Blackstock |
| Est. Birth Year | ~1900 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Ruth Crawford | Daughter | — | 13 | ~1927 |
| Margaret Crawford | Daughter | — | 3 | ~1937 |
| Laura Crawford | Daughter | — | 2 | ~1938 |
| Isaac Crawford | Head | — | 53 | ~1887 |
| Alameda Owens | Other | — | 52 | ~1888 |
| Mary Crawford | Spouse | — | 40 | ~1900 |
Census Appearances
1920
Chester, South …
Spouse, age 20
Chester, South Carolina · implied b. ~1900 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Crawford |
| Given Name | Maggie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Married |
| Birthplace | South Carolina |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Farm Laborer |
| Industry | Home Farm |
| Class of Worker | W |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1930
Chester, South …
Spouse, age 30
Chester, South Carolina · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Crawford |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 30 |
| Marital Status | Married |
| Birthplace | South Carolina |
| Age at First Marriage | 20 |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | South Carolina |
| Occupation | Laborer |
| Industry | General farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
1940
Chester-County, South …
Spouse, age 40
Chester-County, South Carolina · implied b. ~1900 — 6 household members
| Surname | Crawford |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 40 |
| Marital Status | Married |
| Birthplace | South Carolina |
| 1935 Residence (City) | Blackstock |
| Occupation | Helper |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 30 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| Birth State | South Carolina |
| Birth Country | United States |
| Birthplace (normalized) | south carolina |
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 Mary Crawford across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Crawford
Spouse · 1940 · age 40 · b. ~1900 · South Carolina
★ 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 — Chester-County, South Carolina
Open full size
1940 US Federal Census — Chester-County, South Carolina
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03798-00099)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Annie Abraham | 19 | Daughter | Helper | South Carolina |
| 2 | Hattie Perry | 48 | Head | Farmer | South Carolina |
| 3 | Sarah Perry | 22 | Daughter | Helper | South Carolina |
| 4 | Georgie Perry | 20 | Daughter | Helper | South Carolina |
| 5 | Maggie Perry | 15 | Daughter | Helper | South Carolina |
| 6 | Mattie Perry | 13 | Daughter | — | South Carolina |
| 7 | Sam Perry | 11 | Son | — | South Carolina |
| 8 | James E Perry | 8 | Grandson | — | South Carolina |
| 9 | Samuel A O Johnson | 71 | Head | Farmer | South Carolina |
| 10 | Charlotte Johnson | 56 | Wife | — | South Carolina |
| 11 | Allen Jackson | 46 | Boarder | Helper | South Carolina |
| 12 | Isaac Crawford | 53 | Head | Farmer | South Carolina |
| 13 | Mary Crawford THIS PERSON | 40 | Wife | Helper | South Carolina |
| 14 | Ruth A Crawford | 13 | Daughter | — | South Carolina |
| 15 | Margaret Crawford | 3 | Daughter | — | South Carolina |
| 16 | Laura A Crawford | 2 | Daughter | — | South Carolina |
| 17 | Alameda Owens | 52 | Sister-in-law | — | South Carolina |
| 18 | Lonzy Murphy | 67 | Head | Farmer | South Carolina |
| 19 | Lucy Murphy | 60 | Wife | — | South Carolina |
| 20 | Lonzy J Murphy | 31 | Son | Helper | South Carolina |
| 21 | Mary Murphy | 30 | Daughter | Helper | South Carolina |
| 22 | Lucy J Murphy | 28 | Daughter | Helper | South Carolina |
| 23 | Maggie Murphy | 24 | Daughter | Helper | South Carolina |
| 24 | Fred Murphy | 20 | Son | Helper | South Carolina |
| 25 | Charlie Murphy | 17 | Son | — | South Carolina |
| 26 | Horace Murphy | 12 | Grandson | — | South Carolina |
| 27 | Alberta Murphy | 12 | Granddaughter | — | South Carolina |
| 28 | Cleone Murphy | 8 | Granddaughter | — | South Carolina |
| 29 | Annie Gladden | 42 | Head | Farmer | South Carolina |
| 30 | Lela Gladden | 24 | Daughter | — | South Carolina |
| 31 | Emma J Gladden | 22 | Daughter | Helper | South Carolina |
| 32 | Lizzie Gladden | 19 | Daughter | Helper | South Carolina |
| 33 | Gertrude Gladden | 18 | Daughter | Helper | South Carolina |
| 34 | Sam Gladden | 17 | Son | — | South Carolina |
| 35 | Edward Gladden | 16 | Son | — | South Carolina |
| 36 | Johnnie M Gladden | 14 | Daughter | — | South Carolina |
| 37 | Frank Gladden | 12 | Son | — | South Carolina |
| 38 | Annie Gladden | 10 | Daughter | — | South Carolina |
| 39 | Daisy G Gladden | 8 | Daughter | — | South Carolina |
| 40 | Helen Gladden | 5 | Daughter | — | South Carolina |
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)