PJ
Peter Jensen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Iroquois-County, Illinois
Our Model Tree links this Peter Jensen across the 1930 and 1940 US Censuses in Iroquois-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1892), then head of a 7-person household.
Age 48
b. ~1892
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Iroquois-County, Illinois |
| Surname | Jensen |
| Given Name | Peter J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Milks Grove Twp |
| 1935 Residence (County) | Iroquois |
| Additional Details | |
| Occupation | Farmer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 68 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farmer |
| Township / Ward | Milks Grove Twp |
| Est. Birth Year | ~1892 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Peter | Age | Birth yr |
|---|---|---|---|---|
| Marion Jensen | Daughter | — | 21 | ~1919 |
| Carol Jensen | Daughter | — | 5 | ~1935 |
| Peter Jensen | Head | — | 48 | ~1892 |
| Jerome Jensen | Son | — | 23 | ~1917 |
| Florence Jensen | Spouse | — | 45 | ~1895 |
| Patricia Jensen | Daughter | — | 8 | ~1932 |
| Marjory Jensen | Daughter | — | 18 | ~1922 |
Census Appearances
1930
Iroquois, Illinois
Head, age 38
Iroquois, Illinois · implied b. ~1892 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | Peter Jr. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 22 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25 |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Iroquois-County, Illinois
Head, age 48
Iroquois-County, Illinois · implied b. ~1892 — 7 household members
| Surname | Jensen |
| Given Name | Peter J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Milks Grove Twp |
| 1935 Residence (County) | Iroquois |
| Occupation | Farmer |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 68 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| 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 Peter Jensen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Peter Jensen
Head · 1940 · age 48 · b. ~1892 · Illinois
★ 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 — Iroquois-County, Illinois
Open full size
1940 US Federal Census — Iroquois-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00813-00772)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Myron Tambling | 27 | Head | Farmer | Illinois |
| 2 | Esther Tambling | 27 | Wife | — | Illinois |
| 3 | Allen Tambling | 4 | Son | — | Illinois |
| 4 | Carol Tambling | 2 | Daughter | — | Illinois |
| 5 | Edward Krueger | 25 | Head | Farmer | Illinois |
| 6 | Frances Krueger | 24 | Wife | — | Illinois |
| 7 | Joan Krueger | 2 | Daughter | — | Illinois |
| 8 | Robert Siedentop | 23 | Head | Farmer | Illinois |
| 9 | Lola Siedentop | 22 | Wife | — | Illinois |
| 10 | Norman Siedentop | 0 | Son | — | Illinois |
| 11 | Victor Hamende | 43 | Head | Farmer | Illinois |
| 12 | Maud Hamende | 37 | Wife | — | Illinois |
| 13 | Melvin Hamende | 19 | Son | Farm Laborer | Illinois |
| 14 | Joseph Hamende | 17 | Son | Farm Laborer | Illinois |
| 15 | Russell Hamende | 13 | Son | — | Illinois |
| 16 | Harold Hamende | 8 | Son | — | Illinois |
| 17 | Donald Hamende | 6 | Son | — | Illinois |
| 18 | Gerald Hamende | 3 | Son | — | Illinois |
| 19 | June Hamende | 1 | Daughter | — | Illinois |
| 20 | Greg Gregoire | 43 | Head | Farmer | Illinois |
| 21 | Catherine Gregoire | 41 | Wife | — | Illinois |
| 22 | Doreen Gregoire | 18 | Daughter | — | Illinois |
| 23 | Harold Gregoire | 12 | Son | — | Illinois |
| 24 | Frank Collin | 75 | Lodger | — | Illinois |
| 25 | Peter J. Jensen THIS PERSON | 48 | Head | Farmer | Illinois |
| 26 | Florence Jensen | 45 | Wife | — | Illinois |
| 27 | Jerome Jensen | 23 | Son | Laborer | Illinois |
| 28 | Marion Jensen | 21 | Daughter | Laborer | Illinois |
| 29 | Marjory Jensen | 18 | Daughter | — | Illinois |
| 30 | Patricia Jensen | 8 | Daughter | — | Illinois |
| 31 | Carol Jensen | 5 | Daughter | — | Illinois |
| 32 | Henry Fanselow | 52 | Head | Farmer | Illinois |
| 33 | John Sommer | 45 | Partner | Farmer | Illinois |
| 34 | Laura Sommer | 39 | Wife | — | Illinois |
| 35 | David Sommer | 18 | Son | Farm Laborer | Illinois |
| 36 | Roy Gohl | 13 | Nephew | — | Illinois |
| 37 | William Fanselow | 48 | Head | Farmer | Illinois |
| 38 | Mildred Fanselow | 40 | Wife | — | Illinois |
| 39 | Fred Carmain | 67 | Head | Farmer | Illinois |
| 40 | Edith Carmain | 60 | Wife | — | Illinois |
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)