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Gertrude Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sangamon-County, Illinois
Our Model Tree links this Gertrude Martin across the 1920, 1930 and 1940 US Censuses in Sangamon-County, Illinois (XGBoost, ~Confirmed), with identified parents Charles & Frances — first a head (b.~1876), then head of a 5-person household.
Age 64
b. ~1876
Female
Head
Born: Illinois
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Sangamon-County, Illinois |
| Surname | Martin |
| Given Name | Gertrude F |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 64 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Springfield City |
| 1935 Residence (County) | Sangamon |
| Additional Details | |
| Industry | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Springfield City |
| Est. Birth Year | ~1876 |
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 Gertrude | Age | Birth yr |
|---|---|---|---|---|
| William Wilson | Other | — | 8 | ~1932 |
| Maude Potter | Other | — | 62 | ~1878 |
| Eloise Martin | Daughter | — | 32 | ~1908 |
| Ada Wilson | Daughter | — | 29 | ~1911 |
| Gertrude Martin | Head | — | 64 | ~1876 |
Census Appearances
1920
Sangamon, Illinois
Daughter, age 44
Sangamon, Illinois · implied b. ~1876 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Gertrude |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Sangamon, Illinois
Head, age 54
Sangamon, Illinois · implied b. ~1876 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | Gertrude F. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| Father's Birthplace | West Virginia |
| Mother's Birthplace | Illinois |
| Occupation | Machine Operator |
| Industry | Electric Meter Works |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 3000 |
| Radio Set | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Sangamon-County, Illinois
Head, age 64
Sangamon-County, Illinois · implied b. ~1876 — 5 household members
| Surname | Martin |
| Given Name | Gertrude F |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 64 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Springfield City |
| 1935 Residence (County) | Sangamon |
| Industry | 0 |
| Highest Grade | No 7 |
| 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 Gertrude Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Potter (~0.92 confidence) and mother Frances Potter (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Potter
b. ~1848
Source father
● Household
· direct · ~0.92
Mother
Frances Potter
b. ~1853
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Gertrude Martin
Head · 1940 · age 64 · b. ~1876 · 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 — Sangamon-County, Illinois
Open full size
1940 US Federal Census — Sangamon-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00884-00306)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Archie B Herchy | 41 | Head | Miner | France |
| 42 | Vesta M Herchy | 45 | wife | — | Ohio |
| 43 | Dorothy L Herchy | 17 | daughter | New Worker | Illinois |
| 44 | Betty J Herchy | 12 | daughter | — | Illinois |
| 45 | Joseph Schaffer | 73 | Head | Stage Scenery Man | Germany |
| 46 | Louis C Miller | 67 | Head | Attendant | Ohio |
| 47 | Lillian Miller | 41 | wife | — | Missouri |
| 48 | Albert D Hampmire | 33 | Head | Beefman | Illinois |
| 49 | Alma M Hampmire | 32 | wife | — | Illinois |
| 50 | Betty J Hampmire | 11 | daughter | — | Illinois |
| 51 | Cordelia Rickard | 72 | Head | — | Kentucky |
| 52 | Clarence J Mclaughlin | 39 | Head | Laborer | Kentucky |
| 53 | Ruth Mclaughlin | 40 | wife | — | Illinois |
| 54 | Julia Howard | 78 | mother-in-law | — | Illinois |
| 55 | Clarence Mclaughlin | 12 | son | — | Indiana |
| 56 | Katherine A Mclaughlin | 11 | daughter | — | Illinois |
| 57 | William J Chestnut | 41 | Head | Watchman | Illinois |
| 58 | Kattie M Chestnut | 36 | wife | — | Illinois |
| 59 | Margaret M Chestnut | 8 | daughter | — | Illinois |
| 60 | William G Chestnut | 6 | son | — | Illinois |
| 61 | Peter Bartolo | 67 | Head | — | Italy |
| 62 | Mary Bartolo | 63 | wife | — | Italy |
| 63 | Eugene Bartolo | 34 | son | Attendant | Italy |
| 64 | Anna Bartolo | 28 | daughter-in-law | — | Illinois |
| 65 | Anna Bartolo | 27 | daughter | — | Illinois |
| 66 | Gertrude F Martin THIS PERSON | 64 | Head | — | Illinois |
| 67 | Eloise L Martin | 32 | daughter | Machine Operator | Illinois |
| 68 | Ada M Wilson | 29 | daughter | Machine Operator | Illinois |
| 69 | William J Wilson | 8 | grandson | — | Illinois |
| 70 | Maude Potter | 62 | Sister | — | Illinois |
| 71 | Nellie F Hornburgh | 45 | Head | Cook | Illinois |
| 72 | Robert R Hornburgh | 19 | son | Fabricat Clerk | Illinois |
| 73 | Robert G Baker | 26 | son-in-law | Plumber | Illinois |
| 74 | Eleanor E Baker | 23 | daughter | Billing Clerk | Illinois |
| 75 | Charles M Woodward | 63 | Head | Watchmaker | Illinois |
| 76 | Ann L Woodward | 59 | wife | — | Illinois |
| 77 | Ruth A Woodward | 16 | granddaughter | — | Illinois |
| 78 | Herman Reetz | 70 | Head | — | Illinois |
| 79 | Grace A Reetz | 58 | Wife | — | Illinois |
| 80 | Edward J Shoda | 39 | Head | Asst. Superintendent | Illinois |
Pedigree Summary
Gertrude
Gen 1 · 2 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)