HM
Henry Martin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mercer-County, Illinois
Our Model Tree links this Henry Martin across the 1920, 1930 and 1940 US Censuses in Mercer-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1898), then head of a 4-person household.
Age 42
b. ~1898
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, Illinois |
| Surname | Martin |
| Given Name | Henry |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Aledo City |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Occupation | mechanic |
| Industry | garage |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1800 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Mechanic |
| Township / Ward | Aledo City |
| Est. Birth Year | ~1898 |
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 Henry | Age | Birth yr |
|---|---|---|---|---|
| Henry Martin | Head | — | 42 | ~1898 |
| John Martin | Son | — | 3 | ~1937 |
| George Martin | Son | — | 7 | ~1933 |
| Ada Martin | Spouse | — | 30 | ~1910 |
Census Appearances
1920
Mercer, Illinois
Other, age 22
Mercer, Illinois · implied b. ~1898 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Henry |
| Relationship to Head | Brother |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Mechanic |
| Industry | Garage |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Mercer, Illinois
Head, age 32
Mercer, Illinois · implied b. ~1898 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Henry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 29 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Mechanic |
| Industry | Garage |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 15 |
| Radio Set | R |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Mercer-County, Illinois
Head, age 42
Mercer-County, Illinois · implied b. ~1898 — 4 household members
| Surname | Martin |
| Given Name | Henry |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Aledo City |
| 1935 Residence (County) | Mercer |
| Occupation | mechanic |
| Industry | garage |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1800 |
| Highest Grade | 8 |
| 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 Henry Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Henry Martin
Head · 1940 · age 42 · b. ~1898 · 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 — Mercer-County, Illinois
Open full size
1940 US Federal Census — Mercer-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00858-00199)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Williams | 46 | wife | — | Illinois |
| 2 | Clair Workman | 24 | head | Truck Driver | Illinois |
| 3 | Lucille Workman | 21 | wife | Clerk | Illinois |
| 4 | Harry M. Tucker | 32 | head | Business Manager | Ohio |
| 5 | Clarice Tucker | 35 | wife | — | Ohio |
| 6 | Jean Tucker | 11 | daughter | — | New Jersey |
| 7 | Thomas Tucker | 8 | son | — | Ohio |
| 8 | Lois Tucker | 7 | daughter | — | Ohio |
| 9 | Lucille Kindelsperger | 21 | maid | House Work | Illinois |
| 10 | Nellie Miller | 68 | head | — | Illinois |
| 11 | Harry Maxwell | 35 | lodger | Buyer | Illinois |
| 12 | Florence Maxwell | 34 | lodger | — | Illinois |
| 13 | Josephine Harbour | 72 | head | — | Illinois |
| 14 | Eric H. Clauson | 48 | lodger | Manager | Sweden |
| 15 | Maggie Clauson | 45 | lodger | — | Illinois |
| 16 | Charles Yerkey | 50 | head | Farmer | Illinois |
| 17 | Clara Yerkey | 77 | wife | — | Iowa |
| 18 | Maud Deahl | 66 | head | Seamstress | Iowa |
| 19 | Harold Yerkey | 25 | head | Mechanic | Illinois |
| 20 | Louise Yerkey | 25 | wife | — | Illinois |
| 21 | James Yerkey | 0 | son | — | Illinois |
| 22 | Lloyd Nelson | 59 | head | — | Illinois |
| 23 | Paula Nelson | 55 | wife | — | Illinois |
| 24 | Henry Martin THIS PERSON | 42 | head | Mechanic | Illinois |
| 25 | Ada Martin | 30 | wife | — | Illinois |
| 26 | George Martin | 7 | son | — | Illinois |
| 27 | John Martin | 3 | son | — | Illinois |
| 28 | Royal W. Stephens | 33 | head | Attendant | Illinois |
| 29 | Yvonne Stephens | 34 | wife | Music Teacher | Illinois |
| 30 | William Stephens | 2 | son | — | Illinois |
| 31 | Clarence Jasperi | 26 | head | Asst Manager | Iowa |
| 32 | Laverna Jasperi | 26 | wife | — | Iowa |
| 33 | Larry Jasperi | 2 | son | — | Illinois |
| 34 | Michael Jasperi | 0 | son | — | Illinois |
| 35 | Joseph Pierce | 38 | head | — | Illinois |
| 36 | Martin Boruff | 38 | housekeeper | Laborer | Illinois |
| 37 | Freya Boruff | 35 | housekeeper | — | Kansas |
| 38 | Esther Boruff | 11 | daughter | — | Illinois |
| 39 | Kenneth Boruff | 10 | son | — | Illinois |
| 40 | Rodney Boruff | 6 | son | — | Illinois |
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)