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Mary Alexander — 1940 US Census Record
Model Tree available1940 United States Federal Census · Shawnee-County, Kansas
Our Model Tree links this Mary Alexander across the 1920, 1930 and 1940 US Censuses in Shawnee-County, Kansas (XGBoost, ~Confirmed), with identified parents Homer & Homer — first a daughter (b.~1920), then head of a 4-person household.
Age 20
b. ~1920
Female
Daughter
Born: Kansas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Shawnee-County, Kansas |
| Surname | Alexander |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Topeka City |
| 1935 Residence (County) | Shawnee |
| Additional Details | |
| Highest Grade | C 2 |
| 1935 Residence | Same house |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Township / Ward | Topeka City |
| Est. Birth Year | ~1920 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Alexander | Daughter | — | 20 | ~1920 |
| Marjorie Alexander | Daughter | — | 18 | ~1922 |
| Homer Alexander | Head | — | 57 | ~1883 |
| Helen Alexander | Spouse | — | 44 | ~1896 |
Census Appearances
1920
Shawnee, Kansas
Daughter, age
Shawnee, Kansas · implied b. ~1920 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Missouri |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1930
Shawnee, Kansas
Daughter, age 10
Shawnee, Kansas · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Shawnee-County, Kansas
Daughter, age 20
Shawnee-County, Kansas · implied b. ~1920 — 4 household members
| Surname | Alexander |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | Topeka City |
| 1935 Residence (County) | Shawnee |
| Highest Grade | C 2 |
| 1935 Residence | Same house |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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. Identified parents: father Homer Alexander (~0.92 confidence) and father Homer Alexander (~0.92 confidence) and father Homer Alexander (~0.92 confidence) and mother Mary Alexander (~0.92 confidence) and mother Helen Alexander (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Homer Alexander
b. ~1881
Source father
● Household
· direct · ~0.92
Father
Homer Alexander
b. ~1883
Source father
● Household
· direct · ~0.92
Father
Homer Alexander
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Mary Alexander
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Helen Alexander
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Alexander
Daughter · 1940 · age 20 · b. ~1920 · Kansas
★ You are viewing this record
Sibling
Marjorie Alexander
Sibling · 1940 · age 18
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 — Shawnee-County, Kansas
Open full size
1940 US Federal Census — Shawnee-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01261-00402)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harry J. Colburn | 68 | Head | English Professor | Vermont |
| 2 | Mary W. Colburn | 69 | Wife | — | Massachusetts |
| 3 | Roger M. Coulson | 49 | Head | Automobile Mechanic | Kansas |
| 4 | Mabel L. Coulson | 47 | Wife | — | Kansas |
| 5 | Weldon S. Hallauer | 26 | Son-in-law | Apprentice | Kansas |
| 6 | Doris E. Hallauer | 24 | Daughter | — | Kansas |
| 7 | John G. Buckman | 51 | Head | Stone Mason | Kansas |
| 8 | Faye L. Buckman | 37 | Wife | — | Kansas |
| 9 | Luther A. Danner | 83 | Father-in-law | — | Iowa |
| 10 | Homer A. Alexander | 57 | Head | Medical Doctor | Kansas |
| 11 | Helen M. Alexander | 44 | Wife | — | Missouri |
| 12 | Mary L. Alexander THIS PERSON | 20 | Daughter | — | Kansas |
| 13 | Marjorie R. Alexander | 18 | Daughter | — | Kansas |
| 14 | Jestina Leeper | 65 | Head | — | Kansas |
| 15 | Helen E. Leeper | 39 | Daughter | Proprietor | Kansas |
| 16 | Jestina M. Hoatson | 25 | Daughter | Bookkeeper | Kansas |
| 17 | John B. Farley | 60 | Head | Surgeon | Iowa |
| 18 | Lillian Farley | 48 | Wife | — | Kansas |
| 19 | Mary H. Farley | 13 | Daughter | — | Kansas |
| 20 | Margaret R. Farley | 12 | Daughter | — | Kansas |
| 21 | John S. Jr. Dean | 43 | Head | Attorney | Kansas |
| 22 | Dorothy Dean | 42 | Wife | — | Kansas |
| 23 | John S. 3Rd Dean | 15 | Son | — | Kansas |
| 24 | Constance Dean | 13 | Daughter | — | Kansas |
| 25 | Roland Wilson | 29 | Lodger | Janitor | Kansas |
| 26 | Marie Wilson | 32 | Maid | Maid | Tennessee |
| 27 | A. Harry Crane | 37 | Head | Attorney | Kansas |
| 28 | Marjorie Crane | 38 | Wife | — | Colorado |
| 29 | Marjorie Lee Crane | 10 | Daughter | — | Kansas |
| 30 | Judith Anne Crane | 6 | Daughter | — | Kansas |
| 31 | Nellie Maud Countryman | 23 | Maid | Maid | Kansas |
| 32 | — | None | — | — | — |
| 33 | William E. Ray | 73 | Head | — | Missouri |
| 34 | Inez A. Ray | 71 | Wife | — | Missouri |
| 35 | Wallace S. Baldinger | 34 | Head | Art Teacher | Pennsylvania |
| 36 | Ellen N. Baldinger | 28 | Wife | — | Ohio |
| 37 | Richard Baldinger | 1 | Son | — | Kansas |
| 38 | Sims V. Firestone | 55 | Head | President | Kansas |
| 39 | Lillie Firestone | 48 | Wife | — | Kansas |
| 40 | Maryan Firestone | 22 | Daughter | Teacher | Kansas |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 5 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)