MC
Mary Caldwell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Caddo-County, Louisiana
Our Model Tree links this Mary Caldwell across the 1920, 1930 and 1940 US Censuses in Caddo-County, Louisiana (XGBoost, ~Confirmed) — first a head (b.~1884), then head of a 2-person household.
Age 56
b. ~1884
Female
Head
Born: Louisiana
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Caddo-County, Louisiana |
| Surname | Caldwell |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 56 |
| Marital Status | Widowed |
| Birthplace | Louisiana |
| 1935 Residence (County) | R |
| Additional Details | |
| Occupation | 50 |
| Industry | Farmer |
| Class of Worker | Farm |
| Highest Grade | No |
| 1935 Residence | Caddo |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Occupation | 50 |
| Township / Ward | Ward 8 |
| Est. Birth Year | ~1884 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Caldwell | Head | — | 56 | ~1884 |
| Adel Caldwell | Son | — | 23 | ~1917 |
Census Appearances
1920
Caddo, Louisiana
Spouse, age 33
Caddo, Louisiana · implied b. ~1887 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caldwell |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Arkansas |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1930
Caddo, Louisiana
Spouse, age 45
Caddo, Louisiana · implied b. ~1885 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Caldwell |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Louisiana |
| Age at First Marriage | 16 |
| Father's Birthplace | Texas |
| Mother's Birthplace | Texas |
| Can Read/Write | Yes |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Caddo-County, Louisiana
Head, age 56
Caddo-County, Louisiana · implied b. ~1884 — 2 household members
| Surname | Caldwell |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | Black |
| Age | 56 |
| Marital Status | Widowed |
| Birthplace | Louisiana |
| 1935 Residence (County) | R |
| Occupation | 50 |
| Industry | Farmer |
| Class of Worker | Farm |
| Highest Grade | No |
| 1935 Residence | Caddo |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
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 Caldwell 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 Caldwell
Head · 1940 · age 56 · b. ~1884 · Louisiana
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Caddo-County, Louisiana
Open full size
1940 US Federal Census — Caddo-County, Louisiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01389-00270)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bertha Franklin | 2 | Daughter | — | Louisiana |
| 42 | Lillian Franklin | 45 | Head | Farm | Louisiana |
| 43 | Delois Franklin | 25 | Daughter | Farm | Louisiana |
| 44 | Rosa Franklin | 3 | Grand daughter | — | Louisiana |
| 45 | Lillie Franklin | 20 | Grand daughter | Farm | Louisiana |
| 46 | Eddie Franklin | 2 | Grand son | — | Louisiana |
| 47 | Margaret Franklin | 18 | Grand daughter | Farm | Louisiana |
| 48 | Maple Franklin | 16 | Grand daughter | No | Louisiana |
| 49 | Murphy Franklin | 14 | Son | No | Louisiana |
| 50 | Minnie Franklin | 12 | Son | — | Louisiana |
| 51 | Sandy Franklin | 10 | Son | — | Louisiana |
| 52 | Aaron Franklin | 7 | Son | — | Louisiana |
| 53 | Clinton Lewis | 21 | Lodger | 68 | Louisiana |
| 54 | John Benjamin | 30 | Head | 70 | Louisiana |
| 55 | Ruby Benjamin | 28 | Wife | — | Louisiana |
| 56 | Harrison Smith | 55 | Head | 70 | Louisiana |
| 57 | Mary Smith | 50 | Wife | 60 | Louisiana |
| 58 | Harrison Jr. Smith | 25 | Son | 65 | Louisiana |
| 59 | Eddie M Smith | 23 | Son | 60 | Louisiana |
| 60 | Eddie L. Smith | 20 | Son | 60 | Louisiana |
| 61 | Leon Smith | 19 | Son | 60 | Louisiana |
| 62 | Berfylee Banks | 15 | Grand daughter | 6 | Louisiana |
| 63 | Ola Harper | 18 | Grand daughter | 48 | Louisiana |
| 64 | Enice Harper | 1 | Great Grand daughter | — | Louisiana |
| 65 | Isaac Smith | 24 | Head | 60 | Louisiana |
| 66 | Lucy Smith | 25 | Wife | 48 | Louisiana |
| 67 | Donally Smith | 8 | Daughter | — | Louisiana |
| 68 | Marie Smith | 4 | Daughter | — | Louisiana |
| 69 | Isaac Jr. Smith | 1 | Son | — | Louisiana |
| 70 | Henry Wilson | 37 | Head | Farm | Louisiana |
| 71 | Ella M. Wilson | 25 | Wife | Farm | Louisiana |
| 72 | Betty Wilson | 7 | Daughter | — | Louisiana |
| 73 | Henry Jr. Wilson | 5 | Son | — | Louisiana |
| 74 | Doris Wilson | 3 | Daughter | — | Louisiana |
| 75 | Mary Caldwell THIS PERSON | 56 | Head | 50 | Louisiana |
| 76 | Adel Caldwell | 23 | Son | 70 | Louisiana |
| 77 | Adam Lincoln | 44 | Head | 70 | Louisiana |
| 78 | Ethel Lincoln | 39 | Wife | 50 | Louisiana |
| 79 | Sally Trammell | 22 | Lodger | 50 | Louisiana |
| 80 | Clayton Burnell | 25 | Head | Farm | Louisiana |
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)