MH
Mary Harper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Douglas-County, Kansas
Our Model Tree links this Mary Harper across the 1920, 1930 and 1940 US Censuses in Douglas-County, Kansas (XGBoost, ~Confirmed) — first a head (b.~1863), then head of a 3-person household.
Age 77
b. ~1863
Female
Head
Born: Indiana
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Douglas-County, Kansas |
| Surname | Harper |
| Given Name | Mary E. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 77 |
| Marital Status | Widowed |
| Birthplace | Indiana |
| 1935 Residence (City) | Lawrence City |
| 1935 Residence (County) | Douglas |
| Additional Details | |
| Industry | 0 |
| Class of Worker | 0 |
| Highest Grade | H-2 |
| 1935 Residence | Same House |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Lawrence City |
| Est. Birth Year | ~1863 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Ora Harper | Daughter | — | 45 | ~1895 |
| Mary Harper | Head | — | 77 | ~1863 |
| J King | Other | — | 74 | ~1866 |
Census Appearances
1920
Douglas, Kansas
Spouse, age 54
Douglas, Kansas · implied b. ~1866 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harper |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Indiana |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | North Carolina |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Douglas, Kansas
Other, age 66
Douglas, Kansas · implied b. ~1864 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harper |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 22 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Douglas-County, Kansas
Head, age 77
Douglas-County, Kansas · implied b. ~1863 — 3 household members
| Surname | Harper |
| Given Name | Mary E. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 77 |
| Marital Status | Widowed |
| Birthplace | Indiana |
| 1935 Residence (City) | Lawrence City |
| 1935 Residence (County) | Douglas |
| Industry | 0 |
| Class of Worker | 0 |
| Highest Grade | H-2 |
| 1935 Residence | Same House |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Harper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Harper
Head · 1940 · age 77 · b. ~1863 · 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 — Douglas-County, Kansas
Open full size
1940 US Federal Census — Douglas-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01229-00698)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Raymond Rice | 57 | son | Lawyer | Ohio |
| 2 | John King | 43 | Head | Mechanical Engineer | Texas |
| 3 | Kathryn King | 34 | wife | — | Ohio |
| 4 | Mary King | 10 | daughter | — | Penn. |
| 5 | Ruth King | 8 | daughter | — | Kansas |
| 6 | Lowell Baker | 27 | Head | No | Kansas |
| 7 | Wilma S. Baker | 22 | wife | No | Missouri |
| 8 | Judith Ann Baker | 0 | daughter | 0 | Kansas |
| 9 | Jalen E. Torrill | 42 | Head | Owner | Kansas |
| 10 | Mary A. Torrill | 40 | wife | — | Texas |
| 11 | Elizabeth C. Torrill | 2 | daughter | 0 | Kansas |
| 12 | J. William Stone | 34 | Head | City Clerk | Kansas |
| 13 | Anna Marie Stone | 40 | wife | Secretary | Kansas |
| 14 | Elizabeth A. Murphy | 65 | Lodger | Nurse Practical | Kansas |
| 15 | Otto H. Hungerford | 45 | Head | Letter Carrier | Kansas |
| 16 | Georgia C. Hungerford | 42 | wife | — | Indiana |
| 17 | Marguerite E. Hungerford | 10 | daughter | — | Kansas |
| 18 | Joseph E. Simpson | 49 | Head | Shop Foreman | Kansas |
| 19 | Elizabeth Simpson | 47 | wife | — | Kansas |
| 20 | Joseph Jr. Simpson | 24 | son | Station Attendant | Kansas |
| 21 | Paul Rossell | 32 | Head | Granite Cutter | Kansas |
| 22 | Ella May Rossell | 27 | wife | Telephone Operator | Kansas |
| 23 | Roy Flory | 52 | Head | County Treas. | Kansas |
| 24 | Gertie Flory | 53 | wife | — | Kansas |
| 25 | Mildred Weybright | 27 | Lodger | Saleslady | Kansas |
| 26 | Mary E. Harper THIS PERSON | 77 | Head | — | Indiana |
| 27 | Ora Belle Harper | 45 | daughter | English Teacher | Kansas |
| 28 | J. R. King | 74 | Brother | — | Indiana |
| 29 | Franz H. Wiedemann | 50 | Head | Owner | Kansas |
| 30 | Emma K. Wiedemann | 47 | wife | — | Kansas |
| 31 | Ruth Wiedemann | 20 | daughter | — | Kansas |
| 32 | Robert Wiedemann | 17 | son | — | Kansas |
| 33 | Landa E. Thomas | 64 | Head | Laborer | Kansas |
| 34 | Margaret S. Thomas | 22 | wife | — | Kansas |
| 35 | Maud E. Pringle | 60 | Mother in Law | Practical Nursing | New York |
| 36 | Anna Belle De Shazer | 17 | Lodger | — | Kansas |
| 37 | Ruth F. Zook | 48 | Head | — | Kansas |
| 38 | Franklin Zook | 18 | son | — | Kansas |
| 39 | Charles V. Makepeace | 55 | Head | Owner | Indiana |
| 40 | Nina S. Makepeace | 51 | wife | — | Kansas |
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)