MH
Mary Hess — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Adams-County, Iowa
Our Model Tree links this Mary Hess across the 1920, 1930 and 1940 US Censuses in Adams-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1879), then head of a 4-person household.
Age 61
b. ~1879
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Adams-County, Iowa |
| Surname | Hess |
| Given Name | Mary B. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Jasper Twp |
| 1935 Residence (County) | Adams |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Jasper Twp |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Helen Hess | Daughter | — | 38 | ~1902 |
| Edward Hess | Head | — | 68 | ~1872 |
| Hayton Hess | Son | — | 32 | ~1908 |
| Mary Hess | Spouse | — | 61 | ~1879 |
Census Appearances
1920
Adams, Iowa
Spouse, age 39
Adams, Iowa · implied b. ~1881 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hess |
| Given Name | Mary B |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Adams, Iowa
Other, age 51
Adams, Iowa · implied b. ~1879 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hess |
| Given Name | Mary B. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 21 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Adams-County, Iowa
Spouse, age 61
Adams-County, Iowa · implied b. ~1879 — 4 household members
| Surname | Hess |
| Given Name | Mary B. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Jasper Twp |
| 1935 Residence (County) | Adams |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 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 Hess across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Hess
Spouse · 1940 · age 61 · b. ~1879 · Iowa
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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 — Adams-County, Iowa
Open full size
1940 US Federal Census — Adams-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01136-00579)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Angelia Tenorio | 19 | Wife | — | Iowa |
| 42 | Jacob J. Lawrence | 63 | Head | Carpenter | Iowa |
| 43 | Mary J. Lawrence | 60 | Wife | — | Iowa |
| 44 | William H. Naven | 58 | Head | Farmer | Illinois |
| 45 | Elizabeth Naven | 55 | Wife | — | Iowa |
| 46 | Dean Harlan Naven | 15 | Son | — | Iowa |
| 47 | Joseph C. Rubin | 28 | Head | Farmer | Iowa |
| 48 | Leta Rubin | 27 | Wife | — | Iowa |
| 49 | Ronald Lee Rubin | 4 | Son | — | Iowa |
| 50 | Karen Jolene Rubin | 0 | Daughter | — | Iowa |
| 51 | Edward P. Hess | 68 | Head | Farmer | Iowa |
| 52 | Mary B. Hess THIS PERSON | 61 | Wife | — | Iowa |
| 53 | Helen Hess | 38 | Daughter | — | Iowa |
| 54 | Hayton Hess | 32 | Son | Farmer | Iowa |
| 55 | L. O. Heaton | 67 | Head | Farmer | Iowa |
| 56 | A. G. Mcclelland | 53 | Head | Farmer | Iowa |
| 57 | Artie Mcclelland | 53 | Wife | — | Illinois |
| 58 | Donald H. Fisher | 27 | Head | Farmer | Illinois |
| 59 | Wilma Fisher | 26 | Wife | — | Iowa |
| 60 | Richard Dale Fisher | 2 | Son | — | Iowa |
| 61 | J. H. Haley | 43 | Head | Farmer | Iowa |
| 62 | Florence Haley | 42 | Wife | — | Iowa |
| 63 | Delmar Haley | 20 | Son | Farm Helper | Iowa |
| 64 | Fern Haley | 19 | Daughter | — | Iowa |
| 65 | Esther Haley | 17 | Daughter | — | Iowa |
| 66 | Doris Haley | 15 | Daughter | — | Iowa |
| 67 | Calvin Haley | 13 | Son | — | Iowa |
| 68 | Letra Haley | 12 | Daughter | — | Iowa |
| 69 | Darlene Haley | 10 | Daughter | — | Iowa |
| 70 | James Haley | 8 | Son | — | Iowa |
| 71 | Clyde Haley | 6 | Son | — | Iowa |
| 72 | Charles Powell | 49 | Head | Laborer | Iowa |
| 73 | Ruby Powell | 35 | Wife | — | Iowa |
| 74 | Charles Powell | 16 | Son | Farm Hand | Iowa |
| 75 | Kenneth Powell | 14 | Son | — | Iowa |
| 76 | Leo Powell | 9 | Son | — | Iowa |
| 77 | Geoff Dean Powell | 4 | Son | — | Iowa |
| 78 | Violet Powell | 0 | Daughter | — | Iowa |
| 79 | Geo W. Hardisty | 32 | Head | Farmer | Iowa |
| 80 | Susie Hardisty | 31 | Wife | — | Missouri |
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)