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Mary Alexander — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Caddo-County, Louisiana
Our Model Tree links this Mary Alexander across the 1920, 1930 and 1940 US Censuses in Caddo-County, Louisiana (XGBoost, ~Confirmed) — first a head (b.~1879), then head of a 7-person household.
Age 61
b. ~1879
Female
Head
Born: Louisiana
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Caddo-County, Louisiana |
| Surname | Alexander |
| Given Name | Mary Lou |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Widowed |
| Birthplace | Louisiana |
| 1935 Residence (City) | Shreveport City |
| 1935 Residence (County) | Caddo |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Township / Ward | Shreveport City |
| Est. Birth Year | ~1879 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Alexander | Head | — | 61 | ~1879 |
| Charles Perryman | Other | — | 49 | ~1891 |
| Margaret Lawton | Other | — | 23 | ~1917 |
| Alma Greene | Other | — | 39 | ~1901 |
| Watt Daniel | Other | — | 24 | ~1916 |
| Willie Perryman | Other | — | 45 | ~1895 |
| Willard Alexander | Son | — | 33 | ~1907 |
Census Appearances
1920
Caddo, Louisiana
Spouse, age 41
Caddo, Louisiana · implied b. ~1879 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Mary Lou |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| 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 51
Caddo, Louisiana · implied b. ~1879 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Mary L |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Louisiana |
| Age at First Marriage | 18 |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Occupation | Proprietor |
| Industry | Dress Stable |
| Class of Worker | E |
| Can Read/Write | Yes |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Caddo-County, Louisiana
Head, age 61
Caddo-County, Louisiana · implied b. ~1879 — 7 household members
| Surname | Alexander |
| Given Name | Mary Lou |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Widowed |
| Birthplace | Louisiana |
| 1935 Residence (City) | Shreveport City |
| 1935 Residence (County) | Caddo |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| 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 Alexander across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Alexander
Head · 1940 · age 61 · b. ~1879 · 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-t0627-01387-00789)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Annie Lee Wallace | 24 | Daughter | Housewife | Texas |
| 2 | Edwin W. Jr. Dillard | 42 | Head | Conductor | Texas |
| 3 | Bessie C. Dillard | 40 | Wife | — | Louisiana |
| 4 | Edwin W. Jr. Dillard | 15 | Son | — | Mississippi |
| 5 | Reber C. Dillard | 9 | Son | — | Louisiana |
| 6 | Hugh Lee Fuller | 31 | Head | Accountant | Arkansas |
| 7 | Olga E. Fuller | 28 | Wife | — | Texas |
| 8 | Hugh Lee Jr. Fuller | 1 | Son | — | Texas |
| 9 | Clyde P. Levy | 55 | Head | Inspector | Louisiana |
| 10 | Elizabeth M. Levy | 49 | Wife | — | New York |
| 11 | Mary Lou Alexander THIS PERSON | 61 | Head | — | Louisiana |
| 12 | Willard Alexander | 33 | Son | Tester | Louisiana |
| 13 | Watt H. Daniel | 24 | Lodger | Traveling Salesman | Mississippi |
| 14 | Margaret Lawton | 23 | Lodger | Teacher | Louisiana |
| 15 | Alma Greene | 39 | Lodger | Organist | Texas |
| 16 | Charles Perryman | 49 | Lodger | Automobile Agent | Kentucky |
| 17 | Willie C. Perryman | 45 | Lodger | P.B.X. Operator | Louisiana |
| 18 | Marinus Van Der Sluys | 66 | Head | Investments | Holland |
| 19 | Hendrika Van Der Sluys | 66 | Wife | — | Holland |
| 20 | Vilas O. Walters | 45 | Head | Assignment Man | Mississippi |
| 21 | Erma M. Walters | 40 | Wife | — | Texas |
| 22 | Mary Agnes Walters | 18 | Daughter | — | Louisiana |
| 23 | Charles Oliver Walters | 16 | Son | Car Hop | Louisiana |
| 24 | Erma Lee Walters | 14 | Daughter | — | Louisiana |
| 25 | Fred A. Rogers | 38 | Head | Machinist Foreman | Texas |
| 26 | Emma Rogers | 73 | Mother | — | Texas |
| 27 | Jacqueline Rogers | 15 | Daughter | — | Texas |
| 28 | Fred A. Jr. Rogers | 14 | Son | — | Louisiana |
| 29 | Thomas S. Pittman | 73 | Head | Lumber Yard | Texas |
| 30 | Ala C. Pittman | 70 | Wife | — | Louisiana |
| 31 | W. Emmett Edrington | 50 | Head | Traveling Salesman | Arkansas |
| 32 | Mary P. Edrington | 42 | Wife | — | Louisiana |
| 33 | W. Emmett Jr. Edrington | 17 | Son | — | Louisiana |
| 34 | Leo G. Devore | 61 | Head | — | Louisiana |
| 35 | Robert L. Lassiter | 31 | Son-in-law | Telegraph Operator | Louisiana |
| 36 | Ina Lassiter | 33 | Daughter | — | Louisiana |
| 37 | Sally Solomon | 49 | Lodger | — | Kansas |
| 38 | Hal H. Richards | 42 | Head | Automobile Mechanic | Tennessee |
| 39 | Pearl J. Richards | 40 | Wife | — | Mississippi |
| 40 | Wiley J. Richards | 14 | Daughter | — | Mississippi |
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)