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Mary Briggs — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Pottawattamie-County, Iowa
Our Model Tree links this Mary Briggs across the 1930 and 1940 US Censuses in Pottawattamie-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1919), then head of a 9-person household.
Age 21
b. ~1919
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Pottawattamie-County, Iowa |
| Surname | Briggs |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Washington Twp. |
| 1935 Residence (County) | Pottawattamie |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Washington Twp |
| Est. Birth Year | ~1919 |
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 |
|---|---|---|---|---|
| Albert Briggs | Son | — | 26 | ~1914 |
| Albert Briggs | Head | — | 55 | ~1885 |
| Helen Briggs | Spouse | — | 54 | ~1886 |
| William Briggs | Son | — | 24 | ~1916 |
| Earl Briggs | Son | — | 20 | ~1920 |
| Mary Briggs | Daughter | — | 21 | ~1919 |
| Edwin Briggs | Son | — | 25 | ~1915 |
| Robert Briggs | Son | — | 18 | ~1922 |
| Lyle Briggs | Son | — | 12 | ~1928 |
Census Appearances
1930
Pottawattamie, Iowa
Daughter, age 11
Pottawattamie, Iowa · implied b. ~1919 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Briggs |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Pottawattamie-County, Iowa
Daughter, age 21
Pottawattamie-County, Iowa · implied b. ~1919 — 9 household members
| Surname | Briggs |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Washington Twp. |
| 1935 Residence (County) | Pottawattamie |
| 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 Briggs across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Briggs
Daughter · 1940 · age 21 · b. ~1919 · Iowa
★ You are viewing this record
Sibling
Edwin Briggs
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Briggs
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Briggs
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Earl Briggs
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lyle Briggs
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Briggs
Sibling · 1940 · age 24
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 — Pottawattamie-County, Iowa
Open full size
1940 US Federal Census — Pottawattamie-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01199-00951)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Albert Briggs | 55 | Head | Farmer | Iowa |
| 42 | Helen Briggs | 54 | Wife | — | Germany |
| 43 | Albert Jr. Briggs | 26 | Son | Road Maintainer | Iowa |
| 44 | Edwin Briggs | 25 | Son | Laborer | Iowa |
| 45 | William Briggs | 24 | Son | Laborer | Iowa |
| 46 | Mary A. Briggs THIS PERSON | 21 | Daughter | — | Iowa |
| 47 | Earl Briggs | 20 | Son | Laborer | Iowa |
| 48 | Robert Briggs | 18 | Son | Laborer | Iowa |
| 49 | Lyle Briggs | 12 | Son | — | Iowa |
| 50 | Ben Chambers | 70 | Head | Farmer | Missouri |
| 51 | Susie Chambers | 65 | Wife | — | Missouri |
| 52 | George Eyberg | 35 | Head | Farmer | Iowa |
| 53 | Marie Eyberg | 30 | Wife | — | Iowa |
| 54 | Merlyn Eyberg | 8 | Son | — | Iowa |
| 55 | Harley Griffith | 22 | Hired man | Laborer | Iowa |
| 56 | Ernest H. Booge | 45 | Head | Farmer | Iowa |
| 57 | Bertha Booge | 36 | Wife | — | Germany |
| 58 | Dorothy Booge | 14 | Daughter | — | Iowa |
| 59 | Ernest Jr. Booge | 13 | Son | — | Iowa |
| 60 | Grace Booge | 11 | Daughter | — | Iowa |
| 61 | Helen Booge | 10 | Daughter | — | Iowa |
| 62 | Emil Booge | 44 | Hired hand | Laborer | Iowa |
| 63 | Jay P. Mathews | 59 | Head | Farmer | Iowa |
| 64 | Mary Mathews | 57 | Wife | — | Colorado |
| 65 | Mary Mathews | 25 | Daughter | — | Iowa |
| 66 | Theodore Brockman | 27 | Head | Laborer | Iowa |
| 67 | Edith Brockman | 26 | Wife | — | Missouri |
| 68 | Doreen Brockman | 7 | Daughter | — | Iowa |
| 69 | Durward Brockman | 3 | Son | — | Kansas |
| 70 | Darwin Brockman | 1 | Son | — | Iowa |
| 71 | Berwyn Cleveland | 21 | Head | Farmer | Iowa |
| 72 | Irma Cleveland | 20 | Wife | — | Iowa |
| 73 | Ray Hamilton | 48 | Head | Farmer | Iowa |
| 74 | Hazel Hamilton | 47 | Wife | — | Iowa |
| 75 | Twyla Hamilton | 21 | Daughter | School Teacher | Iowa |
| 76 | Betty Hamilton | 18 | Daughter | — | Iowa |
| 77 | Henry Schnepel | 41 | Head | Farmer | Iowa |
| 78 | Alma Schnepel | 43 | Wife | — | Iowa |
| 79 | Harvey Osler | 43 | Head | Farmer | Iowa |
| 80 | Irma Osler | 39 | Wife | — | 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)