MH
Mary Hansen — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Black Hawk, Iowa
Our Model Tree links this Mary Hansen across the 1910 and 1920 US Censuses in Black Hawk, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1903), then head of a 12-person household.
Age 17
b. ~1903
Female
Daughter
Born: Iowa
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Black Hawk, Iowa |
| Surname | Hansen |
| Given Name | Mary S |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Additional Details | |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Cedar Falls Township |
| Est. Birth Year | ~1903 |
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.
12 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Helga Hansen | Daughter | — | 10 | ~1910 |
| Mary Hansen | Daughter | — | 17 | ~1903 |
| Sophia Hansen | Daughter | — | 5 | ~1915 |
| Margaret Hansen | Daughter | — | 12 | ~1908 |
| Hans Hansen | Head | — | 51 | ~1869 |
| John Hansen | Son | — | 8 | ~1912 |
| Amos Hansen | Son | — | 19 | ~1901 |
| Thorwald Hansen | Son | — | 14 | ~1906 |
| Holger Hansen | Son | — | 16 | ~1904 |
| Jorgen Hansen | Son | — | 21 | ~1899 |
| Alfred Hansen | Son | — | 6 | ~1914 |
| Marie Hansen | Spouse | — | 41 | ~1879 |
Census Appearances
1910
Black Hawk, …
Daughter, age 8
Black Hawk, Iowa · implied b. ~1902 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hansen |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Black Hawk, …
Daughter, age 17
Black Hawk, Iowa · implied b. ~1903 — 12 household members
| Surname | Hansen |
| Given Name | Mary S |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| 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 Hansen across 2 US Census years (1910 and 1920) in Black Hawk, Iowa, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Hansen
Daughter · 1920 · age 17 · b. ~1903 · Iowa
★ You are viewing this record
Sibling
Alfred Hansen
Sibling · 1920 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Amos Hansen
Sibling · 1920 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Holger Hansen
Sibling · 1920 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Hansen
Sibling · 1920 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Hansen
Sibling · 1920 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helga Hansen
Sibling · 1920 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jorgen Hansen
Sibling · 1920 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thorwald Hansen
Sibling · 1920 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sophia Hansen
Sibling · 1920 · age 5
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
1920 US Federal Census — Black Hawk, Iowa
Open full size
1920 US Federal Census — Black Hawk, Iowa
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu478unit:0113)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Elmer Stephens | 17 | Son | Farm Hand | Iowa |
| 52 | Halvor Stephens | 15 | Son | None | Iowa |
| 53 | Agnes Stephens | 13 | daughter | None | Iowa |
| 54 | Ida Stephens | 11 | daughter | None | Iowa |
| 55 | John A Stephens | 29 | Head | Farming | Nebraska |
| 56 | Mildred Stephens | 27 | wife | None | Iowa |
| 57 | Frank Stephens | 5 | Son | None | Iowa |
| 58 | Willis Stephens | 1 | Son | None | Iowa |
| 59 | Fred W Peters | 36 | Head | Farmer | Iowa |
| 60 | Elizabeth Peters | 24 | wife | None | Iowa |
| 61 | Everett Peters | 3 | Son | None | Iowa |
| 62 | Palmer Thompson | 20 | Servant | Farm Hand | Iowa |
| 63 | James E Freis | 42 | Head | Farmer | Pennsylvania |
| 64 | Dora Freis | 30 | Sister | Housekeeper | Pennsylvania |
| 65 | Ralph E Bruss | 41 | Head | Farming | New York |
| 66 | Frances Bruss | 39 | wife | None | Iowa |
| 67 | Leona Bruss | 19 | daughter | None | Iowa |
| 68 | Sarah Bruss | 18 | daughter | None | Iowa |
| 69 | Earl Bruss | 5 | son | None | Iowa |
| 70 | Stephen Bonn | 61 | Head | Farming | Illinois |
| 71 | Katie R Bonn | 55 | wife | None | Iowa |
| 72 | Robert Bonn | 27 | Son (Partner) | Farmer | Iowa |
| 73 | Mary Bonn | 24 | daughter | None | Iowa |
| 74 | Gertrude Bonn | 22 | daughter | None | Iowa |
| 75 | William M Eatch | 46 | Head | Farmer | West Virginia |
| 76 | Viola Eatch | 43 | wife | None | West Virginia |
| 77 | Ralph Eatch | 19 | son | Farm Laborer | Iowa |
| 78 | Ida Eatch | 16 | daughter | None | Iowa |
| 79 | Hans Hansen | 51 | Head | Farmer | Denmark |
| 80 | Marie Hansen | 41 | wife | None | Denmark |
| 81 | Jorgen Hansen | 21 | son | Farm Laborer | Iowa |
| 82 | Amos Hansen | 19 | son | Laborer | Iowa |
| 83 | Mary S Hansen THIS PERSON | 17 | daughter | None | Iowa |
| 84 | Holger Hansen | 16 | son | None | Iowa |
| 85 | Thorwald Hansen | 14 | son | None | Iowa |
| 86 | Margaret Hansen | 12 | daughter | None | Iowa |
| 87 | Helga Hansen | 10 | daughter | None | Iowa |
| 88 | John Hansen | 8 | son | None | Iowa |
| 89 | Alfred Hansen | 6 | son | None | Iowa |
| 90 | Sophia Hansen | 5 | daughter | None | Iowa |
| 91 | Thomas Hansen | 41 | Head | Farming | Denmark |
| 92 | Marie Hansen | 40 | wife | None | Denmark |
| 93 | Edwin Hansen | 11 | son | None | Iowa |
| 94 | Esta Hansen | 9 | daughter | None | Iowa |
| 95 | Dagny Hansen | 6 | daughter | None | Iowa |
| 96 | Niels P Thelsen | 44 | Head | Farming | Denmark |
| 97 | Marie Thelsen | 40 | wife | None | Denmark |
| 98 | Helen Thelsen | 15 | daughter | None | Iowa |
| 99 | Esther Thelsen | 12 | daughter | None | Iowa |
| 100 | Julia Thelsen | 11 | daughter | None | Iowa |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)