JC
John Cramer — 1930 US Census Record
Linked across censuses1930 United States Federal Census · St Clair, Illinois
Our Model Tree links this John Cramer across the 1930 and 1940 US Censuses in St Clair, Illinois (XGBoost, ~Confirmed) — first a head (b.~1892), then head of a 7-person household.
Age 38
b. ~1892
Male
Head
Born: Illinois
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | St Clair, Illinois |
| Surname | Cramer |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 24 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | Miner |
| Industry | Coal mine |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 1200 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Miner |
| Township / Ward | Village Of Old Marissa |
| 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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Katie Cramer | Other | — | 36 | ~1894 |
| Willard Cramer | Son | — | 13 | ~1917 |
| Walter Cramer | Son | — | 17 | ~1913 |
| Arthur Cramer | Son | — | 9 | ~1921 |
| John Cramer | Head | — | 38 | ~1892 |
| James Cramer | Son | — | 2 | ~1928 |
| Helen Cramer | Daughter | — | 11 | ~1919 |
Census Appearances
1930
St Clair, …
Head, age 38
St Clair, Illinois · implied b. ~1892 — 7 household members
| Surname | Cramer |
| Given Name | John |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 24 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Miner |
| Industry | Coal mine |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 1200 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
St.-Clair-County, Illinois
Head, age 49
St.-Clair-County, Illinois · implied b. ~1891 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cromer |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Old Marissa Village |
| 1935 Residence (County) | St. Clair |
| Occupation | Blaster |
| Industry | Rock Quarry |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 762 |
| Highest Grade | No 7 |
| 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 John Cramer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Cramer
Head · 1930 · age 38 · b. ~1892 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — St Clair, Illinois
Open full size
1930 US Federal Census — St Clair, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel555:1130)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Bertha Lauerstein | 15 | daughter | — | Illinois |
| 52 | Alberta Lauerstein | 8 | daughter | — | Illinois |
| 53 | John Cramer THIS PERSON | 38 | head | Miner | Illinois |
| 54 | Katie Cramer | 36 | wife-H | — | Illinois |
| 55 | Walter Cramer | 17 | son | Turner | Illinois |
| 56 | Willard Cramer | 13 | son | — | Illinois |
| 57 | Helen Cramer | 11 | daughter | — | Illinois |
| 58 | Arthur Cramer | 9 | son | — | Illinois |
| 59 | James Cramer | 2 | son | — | Illinois |
| 60 | Chas Heil | 42 | head | Farmer | Illinois |
| 61 | Lilian Heil | 34 | wife-H | — | Tennessee |
| 62 | Virginia Heil | 11 | daughter | — | Illinois |
| 63 | Geneva Heil | 6 | daughter | — | Illinois |
| 64 | George Muehlhauser | 30 | head | Miner | Illinois |
| 65 | Freda Muehlhauser | 30 | wife-H | — | Illinois |
| 66 | Alberta Muehlhauser | 8 | daughter | — | Illinois |
| 67 | Francis Muehlhauser | 5 | daughter | — | Illinois |
| 68 | Val Jr Heil | 70 | head | Farmer | Illinois |
| 69 | Lizzie Kinter | 57 | head | First Part | Illinois |
| 70 | Chas Kinter | 17 | son | — | Illinois |
| 71 | Alberta Kinter | 13 | daughter | — | Illinois |
| 72 | Albert Kinter | 12 | son | — | Illinois |
| 73 | Russel Kinter | 11 | son | — | Illinois |
| 74 | Elizabeth Kinter | 11 | daughter | — | Illinois |
| 75 | Emma Kinter | 8 | son | — | Illinois |
| 76 | Robert Kinter | 5 | son | — | Illinois |
| 77 | Gustave Halle | 68 | head | Farmer | Illinois |
| 78 | Katherina Halle | 63 | wife-H | — | Illinois |
| 79 | William H Halle | 37 | son | Farm Hand | Illinois |
| 80 | William Halle | 8 | grandson | — | Illinois |
| 81 | Martin Halle | 7 | grandson | — | Illinois |
| 82 | Albert Halle | 5 | grandson | — | Illinois |
| 83 | Viola Halle | 2 | granddaughter | — | Illinois |
| 84 | Eugene Bollman | 40 | head | Farmer | Illinois |
| 85 | Rosalie Bollman | 38 | wife-H | — | Illinois |
| 86 | Mabel Bollman | 17 | daughter | — | Illinois |
| 87 | James L Herm | 42 | head | Farmer | Illinois |
| 88 | Anna L Herm | 43 | wife-H | — | Illinois |
| 89 | Harold L Herm | 15 | son | — | Illinois |
| 90 | Orville L Herm | 13 | son | — | Illinois |
| 91 | Helen Herm | 11 | daughter | — | Illinois |
| 92 | Bessie M Herm | 8 | daughter | — | Illinois |
| 93 | Arlene Herm | 6 | daughter | — | Illinois |
| 94 | James L Jr Herm | 3 | son | — | Illinois |
| 95 | Robert Janson | 54 | head | Farmer | Illinois |
| 96 | Bertha Janson | 46 | wife-H | — | Illinois |
| 97 | August Janson | 56 | brother | Farm Hand | Illinois |
| 98 | Otto Schmidt | 54 | head | Farmer | Illinois |
| 99 | Emma Schmidt | 42 | wife-H | — | Illinois |
| 100 | Almer Schmidt | 24 | son | — | Illinois |
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)