MS
Mary Sawyer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Boone-County, Iowa
Our Model Tree links this Mary Sawyer across the 1930 and 1940 US Censuses in Boone-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 9-person household.
Age 11
b. ~1929
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Boone-County, Iowa |
| Surname | Sawyer |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Jackson Township |
| 1935 Residence (County) | Boone |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Jackson Township |
| Est. Birth Year | ~1929 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Louise Sawyer | Spouse | — | 41 | ~1899 |
| Beth Sawyer | Daughter | — | 13 | ~1927 |
| Ernest Sawyer | Son | — | 9 | ~1931 |
| Mary Sawyer | Daughter | — | 11 | ~1929 |
| Miriam Sawyer | Daughter | — | 15 | ~1925 |
| Thomas Sawyer | Son | — | 3 | ~1937 |
| Charlotte Sawyer | Daughter | — | 3 | ~1937 |
| John Sawyer | Son | — | 17 | ~1923 |
| Harold Sawyer | Head | — | 41 | ~1899 |
Census Appearances
1930
Boone, Iowa
Daughter, age 1
Boone, Iowa · implied b. ~1929 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sawyer |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Boone-County, Iowa
Daughter, age 11
Boone-County, Iowa · implied b. ~1929 — 9 household members
| Surname | Sawyer |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Jackson Township |
| 1935 Residence (County) | Boone |
| Highest Grade | No 5 |
| 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 Sawyer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Sawyer
Daughter · 1940 · age 11 · b. ~1929 · Iowa
★ You are viewing this record
Sibling
Beth Sawyer
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charlotte Sawyer
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Sawyer
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ernest Sawyer
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Miriam Sawyer
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Sawyer
Sibling · 1940 · age 3
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 — Boone-County, Iowa
Open full size
1940 US Federal Census — Boone-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01141-00716)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Rose Humpate | 27 | Wife | — | Iowa |
| 42 | G. Eva Humpate | 63 | Mother | — | Iowa |
| 43 | Gerald Clark | 26 | Hired hand | Hired Hand | Iowa |
| 44 | Clyde Shemer | 33 | Head | Common Laborer | Iowa |
| 45 | Bertha Shemer | 30 | Wife | — | Iowa |
| 46 | Merlin Shemer | 10 | Son | — | Iowa |
| 47 | Grace Shemer | 6 | Daughter | — | Iowa |
| 48 | George Shemer | 5 | Son | — | Iowa |
| 49 | Ralf Shemer | 2 | Son | — | Iowa |
| 50 | W. Otto Runhaly | 52 | Head | Farming | Iowa |
| 51 | Nelle Runhaly | 47 | Wife | — | Iowa |
| 52 | Roberta Runhaly | 16 | Daughter | — | Iowa |
| 53 | Jean Dora Runhaly | 10 | Daughter | — | Iowa |
| 54 | Harold Sawyer | 41 | Head | Farming | Indiana |
| 55 | Louise Sawyer | 41 | Wife | — | Indiana |
| 56 | John Sawyer | 17 | Son | — | Iowa |
| 57 | Miriam Sawyer | 15 | Daughter | — | Iowa |
| 58 | Beth Sawyer | 13 | Daughter | — | Iowa |
| 59 | Mary Sawyer THIS PERSON | 11 | Daughter | — | Iowa |
| 60 | Ernest Sawyer | 9 | Son | — | Iowa |
| 61 | Thomas Sawyer | 3 | Son | — | Iowa |
| 62 | Charlotte Sawyer | 3 | Daughter | — | Iowa |
| 63 | W. James Jenkins | 63 | Head | Farming | Iowa |
| 64 | Mayme Jenkins | 53 | Wife | — | Iowa |
| 65 | Paul Crehon | 22 | Hired hand | Hired Hand | Iowa |
| 66 | J. Eugene Mcheath | 26 | Head | Farming | Iowa |
| 67 | Elda Mcheath | 23 | Wife | — | Iowa |
| 68 | Patricia Mcheath | 2 | Daughter | — | Iowa |
| 69 | Barbara Mcheath | 1 | Daughter | — | Iowa |
| 70 | D. Ivar Sterner | 55 | Head | Farming | Sweden |
| 71 | Gerda Sterner | 53 | Wife | — | Sweden |
| 72 | L. Harold Henderson | 29 | Head | Farming | Iowa |
| 73 | Ruth Henderson | 35 | Wife | — | Iowa |
| 74 | Douglas Henderson | 1 | Son | — | Iowa |
| 75 | D. Morgan Sterner | 26 | Head | Farming | Iowa |
| 76 | Helen Sterner | 24 | Wife | — | Iowa |
| 77 | Ann Rose Sterner | 6 | Daughter | — | Iowa |
| 78 | Gerald Sterner | 4 | Son | — | Iowa |
| 79 | W. Morgan Sterner | 3 | Son | — | Iowa |
| 80 | O. Glen Danielson | 47 | Head | Farming | Iowa |
Related Census Records
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)