JC
John Curtis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Calhoun-County, Michigan
Our Model Tree links this John Curtis across the 1920, 1930 and 1940 US Censuses in Calhoun-County, Michigan (XGBoost, ~Confirmed), with identified parents Albert & Marjorie — first a son (b.~1907), then head of a 4-person household.
Age 33
b. ~1907
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Calhoun-County, Michigan |
| Surname | Curtis |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Marshall City |
| 1935 Residence (County) | Calhoun |
| Additional Details | |
| Occupation | Dry Cleaning |
| Industry | Dry Cleaning |
| Class of Worker | PW |
| Hours Worked | 37 |
| Income (1939) | 1351 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Dry Cleaning |
| Township / Ward | Marshall City |
| Est. Birth Year | ~1907 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Marjorie Curtis | Head | — | 54 | ~1886 |
| Richard Curtis | Son | — | 22 | ~1918 |
| Albert Curtis | Son | — | 20 | ~1920 |
| John Curtis | Son | — | 33 | ~1907 |
Census Appearances
1920
Calhoun, Michigan
Son, age 11
Calhoun, Michigan · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Curtis |
| Given Name | John L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Calhoun, Michigan
Son, age 22
Calhoun, Michigan · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Curtis |
| Given Name | John S |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | Eng. Surveyor |
| Industry | County |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Calhoun-County, Michigan
Son, age 33
Calhoun-County, Michigan · implied b. ~1907 — 4 household members
| Surname | Curtis |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Marshall City |
| 1935 Residence (County) | Calhoun |
| Occupation | Dry Cleaning |
| Industry | Dry Cleaning |
| Class of Worker | PW |
| Hours Worked | 37 |
| Income (1939) | 1351 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 John Curtis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Albert Curtis (~0.92 confidence) and mother Marjorie Curtis (~0.92 confidence) and mother Marcia Curtis (~0.92 confidence) and mother Marina Curtis (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Albert Curtis
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Marjorie Curtis
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Marcia Curtis
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Marina Curtis
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Curtis
Son · 1940 · age 33 · b. ~1907 · Michigan
★ You are viewing this record
Sibling
Albert Curtis
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Curtis
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Calhoun-County, Michigan
Open full size
1940 US Federal Census — Calhoun-County, Michigan
Page Contents
36 people indexed on this census page (nara:1940:m-t0627-01737-00534)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Minnie Steely | 54 | Wife | — | Indiana |
| 42 | Virginia Steely | 20 | Daughter | Assistant | Michigan |
| 43 | Lewis Jones | 63 | Head | Janitor | Germany |
| 44 | Nora Jones | 55 | Wife | — | Michigan |
| 45 | Lewis Schroeder | 53 | Head | Attorney At Law | Illinois |
| 46 | Stella Schroeder | 47 | Wife | — | Michigan |
| 47 | Joe A. Schroeder | 19 | Son | — | Michigan |
| 48 | Frank Seaman | 85 | Head | — | New York |
| 49 | Annie Seaman | 85 | Wife | — | Michigan |
| 50 | Ellen Walsh | 88 | Head | — | Michigan |
| 51 | Morris Thomas Walsh | 72 | Brother | — | Michigan |
| 52 | Nancy J. Dozier | 83 | Boarder | — | Pennsylvania |
| 53 | Marjorie Curtis | 54 | Head | Information | Michigan |
| 54 | John Curtis THIS PERSON | 33 | Son | Dry Cleaning | Michigan |
| 55 | Richard Curtis | 22 | Son | Clerk | Michigan |
| 56 | Albert Curtis | 20 | Son | — | Michigan |
| 57 | Robert Conover | 35 | Head | Dentist | Michigan |
| 58 | Helen Conover | 22 | Wife | — | Louisiana |
| 59 | Martha Nelson | 68 | Head | — | Ireland |
| 60 | Carrie Wheeler | 76 | Head | — | Michigan |
| 61 | Donna Marshall | 71 | Sister | — | Michigan |
| 62 | Ada Burpee | 78 | Head | — | Michigan |
| 63 | Herman H. Krumwiede | 32 | Head | Machine Operator | Illinois |
| 64 | Viola J. Krumwiede | 21 | Wife | — | Michigan |
| 65 | Gerald F. Krumwiede | 2 | Son | — | Michigan |
| 66 | Gaylord R. Krumwiede | 1 | Son | — | Michigan |
| 67 | James L. Redfield | 73 | Head | — | New York |
| 68 | Amelia F. Redfield | 69 | Wife | — | Michigan |
| 69 | Louis Greene | 62 | Head | — | Michigan |
| 70 | May Greene | 57 | Wife | — | Michigan |
| 71 | Leslie O. Crampton | 51 | Head | — | Michigan |
| 72 | Mary L. Crampton | 50 | Wife | — | Michigan |
| 73 | Louise Crampton | 19 | Daughter | — | Michigan |
| 74 | Myrtle A. Bradburn | 67 | Head | — | Michigan |
| 75 | S. W. Casper | 69 | Head | Sales Manager | Ohio |
| 76 | Donna B. Casper | 62 | Wife | — | Michigan |
Pedigree Summary
John + 2 siblings
Gen 1 · 4 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)