MF
Mary Francis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Union-County, Iowa
Our Model Tree links this Mary Francis across the 1920, 1930 and 1940 US Censuses in Union-County, Iowa (XGBoost, ~Confirmed), with identified parents Charles & Mary — first a daughter (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, Iowa |
| Surname | Francis |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Grant Township |
| 1935 Residence (County) | Union |
| Additional Details | |
| Occupation | Teacher |
| Industry | Schooling |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 750 |
| Highest Grade | C-4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Teacher |
| Township / Ward | Grant Township |
| Est. Birth Year | ~1917 |
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 Francis | Spouse | — | 65 | ~1875 |
| Donald Francis | Son | — | 21 | ~1919 |
| Mary Francis | Daughter | — | 23 | ~1917 |
| Charles Francis | Head | — | 68 | ~1872 |
Census Appearances
1920
Union, Iowa
Daughter, age 3
Union, Iowa · implied b. ~1917 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Francis |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Union, Iowa
Daughter, age 13
Union, Iowa · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Francis |
| Given Name | Mary L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Union-County, Iowa
Daughter, age 23
Union-County, Iowa · implied b. ~1917 — 4 household members
| Surname | Francis |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Grant Township |
| 1935 Residence (County) | Union |
| Occupation | Teacher |
| Industry | Schooling |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 750 |
| Highest Grade | C-4 |
| 1935 Residence | Same place |
| 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 Francis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Francis (~0.92 confidence) and mother Mary Francis (~0.92 confidence) and mother Mary Francis (~0.92 confidence) and mother Ida Francis (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Francis
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Mary Francis
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Mary Francis
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Ida Francis
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Francis
Daughter · 1940 · age 23 · b. ~1917 · Iowa
★ You are viewing this record
Sibling
Donald Francis
Sibling · 1940 · age 21
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 — Union-County, Iowa
Open full size
1940 US Federal Census — Union-County, Iowa
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-01208-00282)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Carl D. Swenson | 54 | Head | Farmer | Iowa |
| 42 | Irene S. Swenson | 23 | Daughter | — | Iowa |
| 43 | Ruth M. Swenson | 21 | Daughter | — | Iowa |
| 44 | Dean E. Swenson | 15 | Son | — | Iowa |
| 45 | Allen E. Swenson | 14 | Son | — | Iowa |
| 46 | Marion L. Thompson | 26 | Head | Farmer | Iowa |
| 47 | Maxine M. Thompson | 23 | Wife | — | Iowa |
| 48 | Larry E. Thompson | 2 | Son | — | Iowa |
| 49 | Richard Thompson | 1 | Son | — | Iowa |
| 50 | Kyle D. Sponsler | 33 | Head | Farmer | Iowa |
| 51 | Inez L. Sponsler | 38 | Wife | — | Iowa |
| 52 | Richard L. Sponsler | 10 | Son | — | Iowa |
| 53 | Edward E. Sponsler | 8 | Son | — | Iowa |
| 54 | Ivan R. Sponsler | 2 | Son | — | Iowa |
| 55 | Rudolph Weishaar | 36 | Head | Farmer | Iowa |
| 56 | Theresa J. Weishaar | 31 | Wife | — | Iowa |
| 57 | William R. Weishaar | 7 | Son | — | Iowa |
| 58 | Robert F. Weishaar | 5 | Son | — | Iowa |
| 59 | Clifford H. Weishaar | 5 | Son | — | Iowa |
| 60 | Claudia L. Weishaar | 3 | Daughter | — | Iowa |
| 61 | Darrel S. Werner | 24 | Head | Farmer | Iowa |
| 62 | Charles J. Francis | 68 | Head | Farmer | Iowa |
| 63 | Mary E. Francis | 65 | Wife | — | Iowa |
| 64 | Mary L. Francis THIS PERSON | 23 | Daughter | Teacher | Iowa |
| 65 | Donald W. Francis | 21 | Son | Farmer | Iowa |
| 66 | Paul Francis | 32 | Head | Farmer | Iowa |
| 67 | Louisa V. Francis | 30 | Wife | — | Iowa |
| 68 | Charles L. Francis | 5 | Son | — | Iowa |
| 69 | Chester W. Francis | 4 | Son | — | Iowa |
| 70 | James H. Francis | 1 | Son | — | Iowa |
| 71 | Melba Garland | 26 | Hired girl | Housekeeper | Iowa |
| 72 | Ralph D. Lucas | 57 | Head | Farmer | Iowa |
| 73 | Honolulu Lucas | 54 | Wife | — | Iowa |
| 74 | Alfred S. Henry | 38 | Head | Farmer | Iowa |
| 75 | Ella M. Henry | 40 | Wife | — | Nebraska |
| 76 | Howard W. Henry | 12 | Son | — | Iowa |
| 77 | John G. Henry | 10 | Son | — | Iowa |
| 78 | Richard D. Henry | 5 | Son | — | Iowa |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 4 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)