MH
Mary Henderson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Washington-County, Kansas
Our Model Tree links this Mary Henderson across the 1920, 1930 and 1940 US Censuses in Washington-County, Kansas (XGBoost, ~Confirmed), with identified parents Ida & Ida — first a daughter (b.~1883), then head of a 2-person household.
Age 57
b. ~1883
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Kansas |
| Surname | Henderson |
| Given Name | Mary S |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Washington City |
| 1935 Residence (County) | Washington |
| Additional Details | |
| Occupation | Social Worker |
| Industry | Welfare Office |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 1440 |
| Highest Grade | C 3 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Social Worker |
| Township / Ward | Washington City |
| Est. Birth Year | ~1883 |
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 Henderson | Daughter | — | 57 | ~1883 |
| Ida Henderson | Head | — | 80 | ~1860 |
Census Appearances
1920
Washington, Kansas
Daughter, age 38
Washington, Kansas · implied b. ~1882 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Henderson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Ohio |
| Occupation | Deputy Treasurer |
| Industry | Court House |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Washington, Kansas
Daughter, age 49
Washington, Kansas · implied b. ~1881 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Henderson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Ohio |
| Occupation | Asst. Clerk |
| Industry | County |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Washington-County, Kansas
Daughter, age 57
Washington-County, Kansas · implied b. ~1883 — 2 household members
| Surname | Henderson |
| Given Name | Mary S |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Washington City |
| 1935 Residence (County) | Washington |
| Occupation | Social Worker |
| Industry | Welfare Office |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 1440 |
| Highest Grade | C 3 |
| 1935 Residence | Same house |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Henderson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Ida Henderson (~0.92 confidence) and mother Ida Henderson (~0.60 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.76
Mother
Ida Henderson
b. ~1860
Source mother
● Household
· direct · ~0.92
Mother
Ida Henderson
b. ~1880
Source mother
● Household
· direct · ~0.6
This person
Anchor record
Mary Henderson
Daughter · 1940 · age 57 · b. ~1883 · Kansas
★ 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 — Washington-County, Kansas
Open full size
1940 US Federal Census — Washington-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01265-00441)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Morford, Dan A Morford | 25 | Brother | Laborer | Iowa |
| 42 | Morford, Hill Morford | 68 | Brother | Street Cleaner | Iowa |
| 43 | Mary L Thuekler | 72 | Head | — | Illinois |
| 44 | Nellie Lee | 57 | Housekeeper | Housekeeper | Kansas |
| 45 | William Nutter | 71 | Head | Janitor | Kansas |
| 46 | Florence Nutter | 64 | Wife | — | Illinois |
| 47 | Chester Nutter | 37 | Son | Laborer | Kansas |
| 48 | Ike S Gano | 68 | Head | — | Kansas |
| 49 | Ida A Henderson | 80 | Head | — | Ohio |
| 50 | Mary S Henderson THIS PERSON | 57 | Daughter | Social Worker | Iowa |
| 51 | A. Ray Ivan | 44 | Head | Civil Engineer | Kansas |
| 52 | Opal M Ivan | 45 | Wife | — | Missouri |
| 53 | Harold U Ivan | 15 | Son | — | Oklahoma |
| 54 | Edgar E Dutton | 66 | Head | — | Michigan |
| 55 | Sara M Dutton | 57 | Wife | — | Kansas |
| 56 | Beth Dutton | 30 | Daughter | Music Teacher | Kansas |
| 57 | Mary A Anderson | 85 | Mother-in-law | — | Kansas |
| 58 | Isaac M Whitetree | 72 | Head | — | Illinois |
| 59 | William Tuckenken | 79 | Head | Commissioner | Germany |
| 60 | Anna S Tuckenken | 73 | Wife | — | Germany |
| 61 | Arnold G Tuckenken | 46 | Head | Rural Mail Carrier | Kansas |
| 62 | Gertrude S Tuckenken | 40 | Wife | — | Nebraska |
| 63 | George W Tuckenken | 17 | Son | — | Kansas |
| 64 | Ralph E Tuckenken | 15 | Son | — | Kansas |
| 65 | William E Peters | 49 | Head | Caretaker | Kansas |
| 66 | Mary E Peters | 53 | Wife | — | Kansas |
| 67 | Raymond J Peters | 22 | Son | Laborer | Kansas |
| 68 | Robert S Peters | 19 | Son | Fry Cook | Colorado |
| 69 | Adolph X Hanni | 51 | Head | Cashier | Switzerland |
| 70 | Belle Hanni | 49 | Wife | — | Kansas |
| 71 | Lewis O Hanni | 15 | Son | — | Kansas |
| 72 | Philip S Hanni | 8 | Son | — | Kansas |
| 73 | Fred E Le Master | 44 | Head | Osteopath | Missouri |
| 74 | Jewel E Le Master | 38 | Wife | — | Kansas |
| 75 | Fred E Le Master | 9 | Son | — | Kansas |
| 76 | Edward W Wall | 37 | Head | Manager | Iowa |
| 77 | Verna D Wall | 37 | Wife | — | Oklahoma |
| 78 | E. Wright Wall | 16 | Son | — | Oklahoma |
| 79 | Gordon L Wall | 13 | Son | — | Oklahoma |
| 80 | Madeline D Wall | 11 | Daughter | — | Oklahoma |
Pedigree Summary
Mary
Gen 1 · 2 parents
~0.76
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)