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George Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this George Martin across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents John & Helena — first a son (b.~1902), then head of a 5-person household.
Age 38
b. ~1902
Male
Son
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Martin |
| Given Name | George |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | H 3 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1902 |
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 George | Age | Birth yr |
|---|---|---|---|---|
| Helen Martin | Daughter | — | 17 | ~1923 |
| Ellen Martin | Daughter | — | 36 | ~1904 |
| Helli Martin | Head | — | 28 | ~1912 |
| Joseph Martin | Other | — | 12 | ~1928 |
| George Martin | Son | — | 38 | ~1902 |
Census Appearances
1920
Cook, Illinois
Other, age 16
Cook, Illinois · implied b. ~1904 — 42 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | George |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 27
Cook, Illinois · implied b. ~1903 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | George |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Laborer |
| Industry | Building Construction |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 38
Cook-County, Illinois · implied b. ~1902 — 5 household members
| Surname | Martin |
| Given Name | George |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | H 3 |
| 1935 Residence | Same house |
| 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 George Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Martin (~0.92 confidence) and mother Helena Martin (~0.92 confidence) and mother Helli Martin (~0.50 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.78
Father
John Martin
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Helena Martin
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Helli Martin
b. ~1912
Source mother
● Household
· direct · ~0.5
This person
Anchor record
George Martin
Son · 1940 · age 38 · b. ~1902 · Illinois
★ You are viewing this record
Sibling
Helen Martin
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ellen Martin
Sibling · 1940 · age 36
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00982-00109)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Raymond F. Warklow | 31 | Brother | Carpenter | Illinois |
| 42 | Richard Warklow | 18 | Brother | Welder | Illinois |
| 43 | Paul Rockefeller | 36 | Head | Manager | Illinois |
| 44 | Hilda Rockefeller | 37 | Wife | — | Wisconsin |
| 45 | Mary Gilligan | 59 | Head | — | Illinois |
| 46 | Donald Gilligan | 31 | Son | Office Clerk | Illinois |
| 47 | Margaret Gilligan | 18 | Daughter | — | Illinois |
| 48 | Marian S. Fallin | 59 | Head | — | Germany |
| 49 | Anthony Clement | 32 | Head | Owner | Michigan |
| 50 | Marie Clement | 33 | Wife | — | South Dakota |
| 51 | Miles White | 27 | Head | Traffic Clerk | Illinois |
| 52 | Helen White | 27 | Wife | Office Clerk | Illinois |
| 53 | Robert P. Morgan | 24 | Head | Bank Clerk | Illinois |
| 54 | Helen Morgan | 22 | Wife | Packer | Illinois |
| 55 | David J. Mcelligott | 65 | Head | Owner | Illinois |
| 56 | Anna Mcelligott | 56 | Wife | — | Illinois |
| 57 | John J. Mcelligott | 28 | Son | Factory Hand | Illinois |
| 58 | David Mcelligott | 22 | Son | Salesman | Illinois |
| 59 | Bernard J. Cullen | 53 | Head | Office Clerk | Illinois |
| 60 | Mary Cullen | 50 | Wife | — | Illinois |
| 61 | Virginia Cullen | 22 | Daughter | Stenographer | Illinois |
| 62 | Jack Cullen | 12 | Son | New Worker | Illinois |
| 63 | Josephine Drostig | 53 | Head | — | New Jersey |
| 64 | George Drostig | 20 | Son | Garage Hand | Illinois |
| 65 | Edith Drostig | 14 | Daughter | — | Illinois |
| 66 | Ethel Drostig | 14 | Daughter | — | Illinois |
| 67 | Helli Martin | 28 | Head | — | Illinois |
| 68 | George Martin THIS PERSON | 38 | Son | — | Illinois |
| 69 | Ellen Martin | 36 | Daughter | Office Clerk | Illinois |
| 70 | Helen Martin | 17 | Daughter | — | Illinois |
| 71 | Joseph Martin | 12 | Grandson | — | Illinois |
| 72 | George J. Carroll | 57 | Head | Postal Clerk | Illinois |
| 73 | Rose Carroll | 52 | Wife | — | Illinois |
| 74 | Sena Wheeler | 78 | Mother-in-law | — | Illinois |
| 75 | William Pankau | 56 | Head | Janitor | Kansas |
| 76 | Mabel Pankau | 54 | Wife | — | Cumberland |
| 77 | John Mulhearn | 34 | Head | Booker | Illinois |
| 78 | Margaret Mulhearn | 30 | Wife | — | Illinois |
| 79 | Jo-Ann Mulhearn | 4 | Daughter | — | Illinois |
| 80 | Patricia A. Mulhearn | 3 | Daughter | — | Illinois |
Pedigree Summary
George + 2 siblings
Gen 1 · 3 parents
~0.78
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)