HM
Harry Mason — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Hamilton, Iowa
Our Model Tree links this Harry Mason across the 1920, 1930 and 1940 US Censuses in Hamilton, Iowa (XGBoost, ~Confirmed) — first a head (b.~1883), then head of a 6-person household.
Age 47
b. ~1883
Male
Head
Born: Illinois
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Hamilton, Iowa |
| Surname | Mason |
| Given Name | Harry A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 26 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | O |
| Can Read/Write | No |
| Home Owned/Rented | R |
| Veteran | no |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farmer |
| Township / Ward | Rose Grove Township |
| Est. Birth Year | ~1883 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Mabel Mason | Daughter | — | 5 | ~1925 |
| Ralph Mason | Son | — | 10 | ~1920 |
| Harry Mason | Head | — | 47 | ~1883 |
| Wallace Mason | Son | — | 15 | ~1915 |
| Lyle Mason | Son | — | 19 | ~1911 |
| Bertha Mason | Other | — | 41 | ~1889 |
Census Appearances
1920
Hamilton, Iowa
Head, age 36
Hamilton, Iowa · implied b. ~1884 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Harley S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | Emp |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Year of Naturalization | R |
| Birthplace (normalized) | illinois |
1930
Hamilton, Iowa
Head, age 47
Hamilton, Iowa · implied b. ~1883 — 6 household members
| Surname | Mason |
| Given Name | Harry A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 26 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | O |
| Can Read/Write | No |
| Home Owned/Rented | R |
| Veteran | no |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Hamilton-County, Iowa
Head, age 57
Hamilton-County, Iowa · implied b. ~1883 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mason |
| Given Name | Hardy |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Hamilton |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 70 |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Iowa |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Harry Mason across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Harry Mason
Head · 1930 · age 47 · b. ~1883 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Hamilton, Iowa
Open full size
1930 US Federal Census — Hamilton, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel657:0530)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Opal Frette | 5 | daughter | None | Iowa |
| 2 | Arline Frette | 3 | daughter | None | Iowa |
| 3 | Helen Frette | 1 | daughter | None | Iowa |
| 4 | Elmer Frette | 27 | son | Laborer | Iowa |
| 5 | John Pearson | 24 | Hired man | Laborer | Sweden |
| 6 | G. J. Knickerbocker | 62 | Head | Farmer | Illinois |
| 7 | Clara Knickerbocker | 53 | Wife-H | None | Indiana |
| 8 | Wesley Knickerbocker | 29 | son | None | Iowa |
| 9 | Kirk Knickerbocker | 27 | son | None | Iowa |
| 10 | Lester Knickerbocker | 23 | son | Laborer | Iowa |
| 11 | Helen Knickerbocker | 21 | daughter | None | Iowa |
| 12 | Marion Knickerbocker | 16 | daughter | None | Iowa |
| 13 | Woodrow Knickerbocker | 13 | son | None | Iowa |
| 14 | Harry A. Mason THIS PERSON | 47 | Head | Farmer | Illinois |
| 15 | Bertha Mason | 41 | Wife-H | None | Iowa |
| 16 | Lyle Mason | 19 | son | Teacher | Iowa |
| 17 | Wallace Mason | 15 | son | None | Iowa |
| 18 | Ralph Mason | 10 | son | None | Iowa |
| 19 | Mabel Mason | 5 | daughter | None | Iowa |
| 20 | Lloyd Furman | 39 | Head | Farmer | Iowa |
| 21 | Alpha Furman | 32 | Wife-H | None | Iowa |
| 22 | Lyle Furman | 13 | son | None | Iowa |
| 23 | Donald Furman | 12 | son | None | Iowa |
| 24 | Muriel Furman | 10 | daughter | None | Iowa |
| 25 | Eugene Furman | 7 | son | None | Iowa |
| 26 | Lilla Furman | 3 | daughter | None | Iowa |
| 27 | Ardipe Furman | 2 | daughter | None | Iowa |
| 28 | Ole Eide | 47 | Head | Farmer | Illinois |
| 29 | Belle Eide | 43 | Wife-H | None | Iowa |
| 30 | Eldell Eide | 18 | son | None | Iowa |
| 31 | Raphael Eide | 15 | son | None | Iowa |
| 32 | Leo Eide | 13 | son | None | Iowa |
| 33 | Fern Eide | 6 | daughter | None | Iowa |
| 34 | Elvis Stroud | 32 | Head | Farmer | Indiana |
| 35 | Rosa Stroud | 30 | Wife-H | None | Indiana |
| 36 | Geneva Stroud | 9 | daughter | None | Indiana |
| 37 | Paul Stroud | 7 | son | None | Indiana |
| 38 | Nolan Stroud | 6 | son | None | Indiana |
| 39 | Dorothy Stroud | 4 | daughter | None | Indiana |
| 40 | Mary Lou Stroud | 2 | daughter | None | Iowa |
| 41 | Aldie Swanson | 35 | Head | Farmer | Nebraska |
| 42 | Mary Swanson | 68 | mother | None | West Virginia |
| 43 | Nelson Knickerbocker | 44 | Head | Farmer | Iowa |
| 44 | Esther Knickerbocker | 44 | Wife-H | None | Iowa |
| 45 | Arthur Knickerbocker | 20 | son | None | Iowa |
| 46 | Robert Knickerbocker | 15 | son | None | Iowa |
| 47 | Edna Knickerbocker | 10 | daughter | None | Iowa |
| 48 | Louis Hanson | 56 | Head | Farmer | Denmark |
| 49 | Hettie Hanson | 46 | Wife-H | None | Norway |
| 50 | Esther Hanson | 20 | daughter | Teacher | Iowa |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)