BA
Bertha Adams — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Bertha Adams across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1889), then head of a 4-person household.
Age 51
b. ~1889
Female
Spouse
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Adams |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Highest Grade | G 8 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1889 |
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 Bertha | Age | Birth yr |
|---|---|---|---|---|
| Mary Adams | Daughter | — | 19 | ~1921 |
| Lester Adams | Son | — | 27 | ~1913 |
| Bertha Adams | Spouse | — | 51 | ~1889 |
| Albert Adams | Head | — | 63 | ~1877 |
Census Appearances
1920
Polk, Iowa
Spouse, age 32
Polk, Iowa · implied b. ~1888 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Adams |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Other, age 42
Polk, Iowa · implied b. ~1888 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Adams |
| Given Name | Bertha |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 19 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Spouse, age 51
Polk-County, Iowa · implied b. ~1889 — 4 household members
| Surname | Adams |
| Given Name | Bertha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Highest Grade | G 8 |
| 1935 Residence | Same House |
| 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 Bertha Adams across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Bertha Adams
Spouse · 1940 · age 51 · b. ~1889 · Iowa
★ 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 — Polk-County, Iowa
Open full size
1940 US Federal Census — Polk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01194-00159)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Patricia Gray | 14 | Daughter | — | Indiana |
| 2 | Sally Ann Gray | 6 | Daughter | — | Iowa |
| 3 | Loton Black | 24 | Head | Service | Wyoming |
| 4 | Jean M Black | 23 | Wife | — | Iowa |
| 5 | Louise W Black | 0 | Son | — | Iowa |
| 6 | Frank C Jr Wegener | 31 | Head | Teacher | Iowa |
| 7 | Helen Wegener | 21 | Wife | — | Missouri |
| 8 | Emma Helmbrecht | 65 | Head | Teacher | Iowa |
| 9 | Lucie West | 63 | Sister | — | Iowa |
| 10 | Glen Brinton | 48 | Head | Custodian | Iowa |
| 11 | Martha Brinton | 49 | Wife | Saleslady | Iowa |
| 12 | Phil R Booth | 65 | Head | Carpenter | Massachusetts |
| 13 | Edie F Booth | 63 | Wife | — | Iowa |
| 14 | Vida B Cox | 51 | Head | Nurse | Iowa |
| 15 | E R Leedham | 55 | Head | Clerk | Iowa |
| 16 | Mina Leedham | 52 | Wife | — | Kansas |
| 17 | John Becker | 39 | Head | Electrician | Missouri |
| 18 | Freda F Becker | 30 | Wife | — | Missouri |
| 19 | Albert M Adams | 63 | Head | Barber | Illinois |
| 20 | Bertha Adams THIS PERSON | 51 | Wife | — | Iowa |
| 21 | Lester Boyd Adams | 27 | Son | Barber | Iowa |
| 22 | Mary Adams | 19 | Daughter | — | Iowa |
| 23 | Helen P George | 42 | Head | Saleslady | Iowa |
| 24 | Persis George | 19 | Daughter | — | Iowa |
| 25 | Marilyn George | 17 | Daughter | — | Iowa |
| 26 | Eva Chamberlin | 66 | Head | — | Missouri |
| 27 | Margaret Chamberlin | 40 | Daughter | Clerk | Missouri |
| 28 | Anna Mckiernan | 57 | Head | — | Missouri |
| 29 | Charles Mckiernan | 19 | Son | — | Missouri |
| 30 | Ada Mckiernan | 19 | Son | — | Missouri |
| 31 | John Mckiernan | 17 | Son | — | Missouri |
| 32 | W P Mahady | 23 | Head | Time Keeper | Iowa |
| 33 | Marion Mahady | 22 | Wife | — | Iowa |
| 34 | Sally Mahady | 4 | Daughter | — | Iowa |
| 35 | Pat Mahady | 1 | Daughter | — | Iowa |
| 36 | Eldon Halleburton | 42 | Head | Clerk | Missouri |
| 37 | Eula Halleburton | 42 | Wife | — | Iowa |
| 38 | Ramona Halleburton | 18 | Daughter | Clerk | Iowa |
| 39 | John Ralph Halleburton | 15 | Son | — | Iowa |
| 40 | Carl E Jr Nordstrom | 27 | Head | Electrician | Iowa |
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)