HP
Harry Peterson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Clinton-County, Iowa
Our Model Tree links this Harry Peterson across the 1920, 1930 and 1940 US Censuses in Clinton-County, Iowa (XGBoost, ~Confirmed), with identified parents Chris & Mary — first a head (b.~1899), then head of a 3-person household.
Age 41
b. ~1899
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Clinton-County, Iowa |
| Surname | Peterson |
| Given Name | Harry H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Clinton City |
| 1935 Residence (County) | Clinton |
| Additional Details | |
| Occupation | Upholsterer |
| Industry | Furniture |
| Class of Worker | E |
| Hours Worked | 60 |
| Income (1939) | 600 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Upholsterer |
| Township / Ward | Clinton City |
| Est. Birth Year | ~1899 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Harry Peterson | Head | — | 41 | ~1899 |
| Maxine Peterson | Daughter | — | 11 | ~1929 |
| Olive Peterson | Spouse | — | 38 | ~1902 |
Census Appearances
1920
Clinton, Iowa
Son, age 21
Clinton, Iowa · implied b. ~1899 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Petersen |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Laborer |
| Industry | General farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Danish |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Clinton, Iowa
Son, age 31
Clinton, Iowa · implied b. ~1899 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Petersen |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Upholsterer |
| Industry | Furniture |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Clinton-County, Iowa
Head, age 41
Clinton-County, Iowa · implied b. ~1899 — 3 household members
| Surname | Peterson |
| Given Name | Harry H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Clinton City |
| 1935 Residence (County) | Clinton |
| Occupation | Upholsterer |
| Industry | Furniture |
| Class of Worker | E |
| Hours Worked | 60 |
| Income (1939) | 600 |
| Highest Grade | H 2 |
| 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 Harry Peterson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Chris Petersen (~0.92 confidence) and mother Mary Petersen (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Chris Petersen
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Mary Petersen
b. ~1872
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harry Peterson
Head · 1940 · age 41 · b. ~1899 · 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 — Clinton-County, Iowa
Open full size
1940 US Federal Census — Clinton-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01150-00301)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Hans Madsden | 57 | Head | Operator | Denmark |
| 42 | Marie Madsden | 38 | Wife | — | Norway |
| 43 | William Ferguson | 28 | Head | Moulder | Illinois |
| 44 | Mona Ferguson | 24 | Wife | — | Iowa |
| 45 | Betty Ferguson | 3 | Daughter | — | Iowa |
| 46 | Clyde Ferguson | 1 | Son | — | Iowa |
| 47 | Clarence Huntington | 51 | Head | Owner | Iowa |
| 48 | Sadie Huntington | 52 | Wife | Housework | Iowa |
| 49 | Dorothy Strong | 30 | Head | Owner | Iowa |
| 50 | Shirley Strong | 3 | Daughter | — | Iowa |
| 51 | Daughter Strong | 0 | Daughter | — | Iowa |
| 52 | Ida Sales | 55 | Mother | Waitress | Wisconsin |
| 53 | Howard S. Cook | 47 | Head | Clerk | Iowa |
| 54 | Esther Cook | 38 | Wife | — | Iowa |
| 55 | Lorraine Cook | 11 | Daughter | — | Iowa |
| 56 | Hans P. Howard | 71 | Head | Watchman | Denmark |
| 57 | Andrea Howard | 68 | Wife | — | Denmark |
| 58 | William Harlin | 48 | Head | Moulder | Iowa |
| 59 | Olive A. Harlin | 33 | Wife | — | Iowa |
| 60 | Cora Harlin | 15 | Son | — | Iowa |
| 61 | Harriett Harlin | 14 | Daughter | — | Iowa |
| 62 | Ruby Harlin | 12 | Daughter | — | Iowa |
| 63 | Wanda Harlin | 10 | Daughter | — | Iowa |
| 64 | Loretta Harlin | 7 | Daughter | — | Iowa |
| 65 | Sonia Harlin | 5 | Daughter | — | Iowa |
| 66 | Marcella Harlin | 3 | Daughter | — | Iowa |
| 67 | Harry H. Peterson THIS PERSON | 41 | Head | Upholsterer | Iowa |
| 68 | Olive Peterson | 38 | Wife | — | Iowa |
| 69 | Maxine Peterson | 11 | Daughter | — | Iowa |
| 70 | Charles E. Morgan | 51 | Head | Fireman | Iowa |
| 71 | Anna C. Morgan | 50 | Wife | — | Iowa |
| 72 | William Draycott | 50 | Head | — | England |
| 73 | Mattie E. Draycott | 51 | Wife | — | Iowa |
| 74 | Clarence Boer | 26 | Head | Truck Driver | Illinois |
| 75 | Anna Q. Boer | 25 | Wife | — | Illinois |
| 76 | Robert Morgan | 15 | Lodger | — | Iowa |
| 77 | Beulah Mcmanus | 30 | Lodger | Decorator | Iowa |
| 78 | Celia Miller | 52 | Head | Sandress | Illinois |
| 79 | Earl Miller | 31 | Son | Fitting Dept | Illinois |
| 80 | Dorothy Miller | 28 | Daughter | — | Iowa |
Pedigree Summary
Harry
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
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)