AP
Alfred Peterson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Black Hawk, Iowa
Our Model Tree links this Alfred Peterson across the 1920, 1930 and 1940 US Censuses in Black Hawk, Iowa (XGBoost, ~Confirmed) — first a head (b.~1878), then head of a 5-person household.
Age 52
b. ~1878
Male
Head
Born: Denmark
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Black Hawk, Iowa |
| Surname | Peterson |
| Given Name | Alfred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Denmark |
| Naturalization Status | Naturalized |
| Year of Immigration | 1881 |
| Age at First Marriage | 24 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Additional Details | |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | E |
| Can Read/Write | Yes |
| Mother Tongue | Danish |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
| Occupation | Farmer |
| Township / Ward | Lincoln Township |
| Est. Birth Year | ~1878 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Alfred | Age | Birth yr |
|---|---|---|---|---|
| Paul Peterson | Son | — | 18 | ~1912 |
| Anna Peterson | Spouse | — | 45 | ~1885 |
| Alfred Peterson | Head | — | 52 | ~1878 |
| Axel Peterson | Son | — | 15 | ~1915 |
| Elsie Peterson | Daughter | — | 13 | ~1917 |
Census Appearances
1920
Black Hawk, …
Head, age 41
Black Hawk, Iowa · implied b. ~1879 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Peterson |
| Given Name | Alfred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Denmark |
| Year of Immigration | 1898 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | Em |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Danish |
| Home Owned/Rented | R |
| Birth Country | Denmark |
| Year of Naturalization | 1902 |
| Birthplace (normalized) | denmark |
1930
Black Hawk, …
Head, age 52
Black Hawk, Iowa · implied b. ~1878 — 5 household members
| Surname | Peterson |
| Given Name | Alfred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Denmark |
| Naturalization Status | Naturalized |
| Year of Immigration | 1881 |
| Age at First Marriage | 24 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | E |
| Can Read/Write | Yes |
| Mother Tongue | Danish |
| Home Owned/Rented | R |
| Home Value / Rent | 40 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
1940
Black-Hawk-County, Iowa
Head, age 62
Black-Hawk-County, Iowa · implied b. ~1878 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Petersen |
| Given Name | Alfred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | Lincoln Twp |
| 1935 Residence (County) | Blackhawk |
| Naturalization Status | Naturalized |
| Occupation | farm operator |
| Industry | farm |
| Class of Worker | E |
| Hours Worked | 72 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
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 Alfred Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Alfred Peterson
Head · 1930 · age 52 · b. ~1878 · Iowa
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Black Hawk, Iowa
Open full size
1930 US Federal Census — Black Hawk, Iowa
Page Contents
46 people indexed on this census page (ia:1930:iowacensus00reel642:0340)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Alfred Peterson THIS PERSON | 52 | Head | Farmer | Denmark |
| 2 | Anna Peterson | 45 | Wife | None | Denmark |
| 3 | Paul E Peterson | 18 | Son | None | Iowa |
| 4 | Axel A Peterson | 15 | Son | None | Iowa |
| 5 | Elsie M Peterson | 13 | Daughter | None | Iowa |
| 6 | Fred R Rodgers | 29 | Head | Laborer | Illinois |
| 7 | Ruth Rodgers | 27 | Wife | None | California |
| 8 | Fred R Rodgers | 6 | Son | None | California |
| 9 | Joy Rodgers | 5 | Daughter | None | California |
| 10 | Priscilla Rodgers | 2 | Daughter | None | Iowa |
| 11 | John Maas | 31 | Head | Farmer | Iowa |
| 12 | Martha Brant | 39 | Servant | Servant | Iowa |
| 13 | Thos L Hayes | 31 | Head | Farmer | Iowa |
| 14 | Henrietta Hayes | 26 | Wife | None | Iowa |
| 15 | Carrol Hayes | 3 | Son | None | Iowa |
| 16 | Rose Duffey | 24 | Servant | Servant | Missouri |
| 17 | Alvin R Hyde | 33 | Head | Molder | Iowa |
| 18 | Elsie M Hyde | 27 | Wife | None | Iowa |
| 19 | Dale Hyde | 12 | Son | None | Iowa |
| 20 | Fox Hyde | 8 | Son | None | Iowa |
| 21 | Robert Hyde | 5 | Son | None | Iowa |
| 22 | Lyle Hyde | 4 | Son | None | Iowa |
| 23 | James Hyde | 2 | Son | None | Iowa |
| 24 | P. E. Ohat | 35 | Head | Farmer | Iowa |
| 25 | Tillie Ohat | 30 | Wife | None | Virginia |
| 26 | Dale Ohat | 13 | Son | None | Iowa |
| 27 | Donald Ohat | 10 | Son | None | Iowa |
| 28 | Delbert Foster | 52 | Head | Farmer | Illinois |
| 29 | Ethel Miller | 20 | Servant | Servant | Iowa |
| 30 | Cecil Hart | 21 | Laborer | Laborer | Illinois |
| 31 | W. P. Deeley | 55 | Head | Farmer | Iowa |
| 32 | Susie M Deeley | 50 | Wife | None | Iowa |
| 33 | Xene M Deeley | 26 | Daughter | Cashier | Iowa |
| 34 | Randall Davis | 18 | Boarder | Laborer | Iowa |
| 35 | Lloyd Loman | 42 | Head | Farmer | Iowa |
| 36 | Elizabeth Loman | 42 | Wife | None | Iowa |
| 37 | Martha Loman | 17 | Daughter | None | Iowa |
| 38 | James Loman | 15 | Son | None | Iowa |
| 39 | Daniel Loman | 13 | Son | None | Iowa |
| 40 | Ruth Loman | 11 | Daughter | None | Iowa |
| 41 | Jean Loman | 9 | Daughter | None | Iowa |
| 42 | Lloyd Loman | 7 | Son | None | Iowa |
| 43 | L. D. Vaughan | 69 | Laborer | Laborer | Iowa |
| 44 | Daniel Garrity | 50 | Head | Farmer | Illinois |
| 45 | Frances Garrity | 45 | Wife | None | California |
| 46 | Harry Mcmullen | 19 | Laborer | Laborer | 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)