HM
Harry Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Harry Martin across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents John & John — first a head (b.~1914), then head of a 4-person household.
Age 26
b. ~1914
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Martin |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Truck Driver |
| Industry | Cartage |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 500 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Truck Driver |
| Township / Ward | Chicago |
| Est. Birth Year | ~1914 |
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 Harry | Age | Birth yr |
|---|---|---|---|---|
| Mary Martin | Daughter | — | 1 | ~1939 |
| Harry Martin | Head | — | 26 | ~1914 |
| Harry Martin | Son | — | 2 | ~1938 |
| Mary Martin | Spouse | — | 23 | ~1917 |
Census Appearances
1920
Cook, Illinois
Son, age 4
Cook, Illinois · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Harry |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 15
Cook, Illinois · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 26
Cook-County, Illinois · implied b. ~1914 — 4 household members
| Surname | Martin |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Truck Driver |
| Industry | Cartage |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 500 |
| Highest Grade | H 2 |
| 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 Harry 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 father John Martin (~0.92 confidence) and mother Alice Martin (~0.92 confidence) and mother Ruth Martin (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Martin
b. ~1890
Source father
● Household
· direct · ~0.92
Father
John Martin
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Alice Martin
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Ruth Martin
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harry Martin
Head · 1940 · age 26 · b. ~1914 · 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 — 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-t0627-00944-00604)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Tony Warenikous | 47 | Son | Laborer | Illinois |
| 2 | Ann Warenikous | 26 | Daughter | Operator | Illinois |
| 3 | Sofia Warenikous | 19 | Daughter | Office Clerk | Illinois |
| 4 | Harry Martin THIS PERSON | 26 | Head | Truck Driver | Illinois |
| 5 | Mary Martin | 23 | Wife | — | Illinois |
| 6 | Harry Jr Martin | 2 | Son | — | Illinois |
| 7 | Mary Ann Martin | 1 | Daughter | — | Illinois |
| 8 | Victor Baggach | 40 | Head | Laborer | Illinois |
| 9 | Elizabeth Baggach | 40 | Wife | — | Illinois |
| 10 | Lillian Baggach | 20 | Daughter | Packer | Illinois |
| 11 | Harold Baggach | 7 | Son | — | Illinois |
| 12 | Peter Milkintas | 22 | Head | Laborer | Illinois |
| 13 | Rosemary Milkintas | 19 | Wife | — | Illinois |
| 14 | Thomas Milkintas | 1 | Son | — | Illinois |
| 15 | Tony Conty | 44 | Head | Laborer | Italy |
| 16 | Hattie Conty | 31 | Wife | — | Illinois |
| 17 | Coral Curl | 37 | Head | Laborer | Indiana |
| 18 | Anna Curl | 36 | Wife | — | Indiana |
| 19 | Alice Curl | 17 | Daughter | — | Indiana |
| 20 | Clarence Beard | 30 | Head | Laborer | Indiana |
| 21 | Delena Beard | 27 | Wife | — | Indiana |
| 22 | Lorna Beard | 7 | Daughter | — | Indiana |
| 23 | William Beard | 6 | Son | — | Indiana |
| 24 | Jerry Beard | 1 | Son | — | Illinois |
| 25 | Frank Valus | 29 | Head | Laborer | Illinois |
| 26 | Rose Valus | 25 | Wife | — | Illinois |
| 27 | Ronald Valus | 8 | Son | — | Illinois |
| 28 | Jean Valus | 5 | Daughter | — | Illinois |
| 29 | Marie Mckeon | 34 | Head | — | Illinois |
| 30 | Joseph Mckeon | 2 | Son | — | Illinois |
| 31 | Paul Sjostrom | 35 | Head | Mortician | Lithuania |
| 32 | Agnes Sjostrom | 35 | Wife | Tailor | Lithuania |
| 33 | Ronald Sjostrom | 13 | Son | — | Illinois |
| 34 | Genevieve Sjostrom | 8 | Daughter | — | Illinois |
| 35 | Salvatore Bugs | 53 | Head | — | Italy |
| 36 | Anthony Bugs | 24 | Son | Laborer | Illinois |
| 37 | Louis Frakna | 33 | Son-in-law | Truck Driver | Illinois |
| 38 | Lena Frakna | 26 | Daughter | — | Illinois |
| 39 | Frances Frakna | 1 | Daughter | — | Illinois |
| 40 | Emily Shader | 81 | Head | — | Switzerland |
Pedigree Summary
Harry
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)