WC
William Carr — 1940 US Census Record
Model Tree available1940 United States Federal Census · Dubuque-County, Iowa
Our Model Tree links this William Carr across the 1910, 1920, 1930 and 1940 US Censuses in Dubuque-County, Iowa (XGBoost, ~Confirmed), with identified parents John & Sarah — first a head (b.~1906), then head of a 5-person household.
Age 34
b. ~1906
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Dubuque-County, Iowa |
| Surname | Carr |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Prairie Creek Twp |
| 1935 Residence (County) | Dubuque |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 80 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Prairie Creek Twp |
| Est. Birth Year | ~1906 |
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 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Carr | Daughter | — | 3 | ~1937 |
| William Carr | Head | — | 34 | ~1906 |
| Evelyn Cooley | Other | — | 34 | ~1906 |
| Andrew Kluener | Other | — | 20 | ~1920 |
| Marguerite Carr | Spouse | — | 23 | ~1917 |
Census Appearances
1910
Dubuque, Iowa
Son, age 5
Dubuque, Iowa · implied b. ~1905 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carr |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Dubuque, Iowa
Son, age 15
Dubuque, Iowa · implied b. ~1905 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Corr |
| Given Name | Willie |
| Relationship to Head | Son |
| Sex | M |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Dubuque, Iowa
Son, age 25
Dubuque, Iowa · implied b. ~1905 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carr |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | General farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Dubuque-County, Iowa
Head, age 34
Dubuque-County, Iowa · implied b. ~1906 — 5 household members
| Surname | Carr |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Prairie Creek Twp |
| 1935 Residence (County) | Dubuque |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 80 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 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 William Carr across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Carr (~0.92 confidence) and mother Sarah Corr (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Carr
b. ~1863
Source father
● Household
· direct · ~0.92
Mother
Sarah Corr
b. ~1873
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Carr
Head · 1940 · age 34 · b. ~1906 · 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 — Dubuque-County, Iowa
Open full size
1940 US Federal Census — Dubuque-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01159-00629)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Flanagan Marian Flanigan | 15 | Daughter | — | Iowa |
| 2 | James Molloy | 52 | Head | Farmer | Iowa |
| 3 | Elizabeth Molloy | 46 | Wife | — | Iowa |
| 4 | John Molloy | 19 | Son | Farm Laborer | Iowa |
| 5 | Edward Molloy | 17 | Son | — | Iowa |
| 6 | Robert Molloy | 13 | Son | — | Iowa |
| 7 | Joseph Bradshaw | 66 | Head | Farmer | Iowa |
| 8 | Leonard Bradshaw | 23 | Son | Farm Laborer | Iowa |
| 9 | Wilfred Bradshaw | 19 | Son | Farm Laborer | Iowa |
| 10 | Joseph Jr. Bradshaw | 12 | Son | — | Iowa |
| 11 | Bertha Daniel | 65 | Housekeeper | Housekeeper | Wisconsin |
| 12 | Cyril Urbain | 29 | Head | Farmer | Iowa |
| 13 | Delpha Urbain | 23 | Wife | — | Iowa |
| 14 | Della Urbain | 0 | Daughter | — | Iowa |
| 15 | William Carr THIS PERSON | 34 | Head | Farmer | Iowa |
| 16 | Marguerite Carr | 23 | Wife | — | Iowa |
| 17 | Elizabeth Carr | 3 | Daughter | — | Iowa |
| 18 | Evelyn Cooley | 34 | Sister-in-law | Housework | Iowa |
| 19 | Andrew Kluener | 20 | Hired hand | Farm Laborer | Iowa |
| 20 | Al Kaeppl | 31 | Head | Farmer | Nebraska |
| 21 | Lorraine Kaeppl | 31 | Wife | — | Iowa |
| 22 | John Loeber | 42 | Head | Farmer | Iowa |
| 23 | Marguerite Loeber | 44 | Wife | — | Iowa |
| 24 | Louis Loeber | 23 | Son | Farm Laborer | Iowa |
| 25 | Margaret Loeber | 81 | Mother | — | Iowa |
| 26 | Mary Brown | 50 | Head | Farmer | Iowa |
| 27 | Vincent Brown | 25 | Son | Farm Laborer | Iowa |
| 28 | Paul Brown | 18 | Son | Farm Laborer | Iowa |
| 29 | Bernice Mccarthy | 27 | Niece | Housework | S. Dakota |
| 30 | Louis Brown | 30 | Head | Farmer | Iowa |
| 31 | Grace Brown | 29 | Wife | — | Iowa |
| 32 | Rose Mary Brown | 4 | Daughter | — | Iowa |
| 33 | Robert Brown | 2 | Son | — | Iowa |
| 34 | Martin Flynn | 31 | Hired hand | Farm Laborer | Iowa |
| 35 | Orville Conlan | 22 | Head | Farmer | Iowa |
| 36 | Lucille Conlan | 21 | Wife | — | Iowa |
| 37 | Patsy Ann Conlan | 0 | Daughter | — | Iowa |
| 38 | Joseph Wagner | 45 | Head | Farmer | Iowa |
| 39 | Mary Wagner | 38 | Wife | — | Iowa |
| 40 | John Wagner | 12 | Son | Farm Laborer | Iowa |
Pedigree Summary
William
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)