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Grace Lewis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Oakland-County, Michigan
Our Model Tree links this Grace Lewis across the 1930 and 1940 US Censuses in Oakland-County, Michigan (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 11-person household.
Age 18
b. ~1922
Female
Daughter
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Oakland-County, Michigan |
| Surname | Lewis |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Pontiac City |
| 1935 Residence (County) | Oakland |
| Additional Details | |
| Occupation | Helping Mother |
| Industry | Potato Chips |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 468 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Helping Mother |
| Township / Ward | Pontiac City |
| Est. Birth Year | ~1922 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Grace | Age | Birth yr |
|---|---|---|---|---|
| Algen Lewis | Son | — | 11 | ~1929 |
| Forest Lewis | Son | — | 20 | ~1920 |
| Ruth Lewis | Daughter | — | 4 | ~1936 |
| Celia Lewis | Spouse | — | 37 | ~1903 |
| Joseph Lewis | Son | — | 16 | ~1924 |
| James Lewis | Son | — | 3 | ~1937 |
| Martha Lewis | Daughter | — | 9 | ~1931 |
| Grace Lewis | Daughter | — | 18 | ~1922 |
| Marcella Lewis | Daughter | — | 15 | ~1925 |
| Thomas Lewis | Head | — | 45 | ~1895 |
| Alfred Lewis | Son | — | 1 | ~1939 |
Census Appearances
1930
Oakland, Michigan
Daughter, age 7
Oakland, Michigan · implied b. ~1923 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Grace M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Oakland-County, Michigan
Daughter, age 18
Oakland-County, Michigan · implied b. ~1922 — 11 household members
| Surname | Lewis |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Pontiac City |
| 1935 Residence (County) | Oakland |
| Occupation | Helping Mother |
| Industry | Potato Chips |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 468 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Grace Lewis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Grace Lewis
Daughter · 1940 · age 18 · b. ~1922 · Michigan
★ You are viewing this record
Sibling
Forest Lewis
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alfred Lewis
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Lewis
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Lewis
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Algen Lewis
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marcella Lewis
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Lewis
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Lewis
Sibling · 1940 · age 9
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 — Oakland-County, Michigan
Open full size
1940 US Federal Census — Oakland-County, Michigan
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01801-00779)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Thomas Lewis | 45 | Head | Exterminator | Michigan |
| 42 | Celia Lewis | 37 | Wife | — | Michigan |
| 43 | Forest Lewis | 20 | Son | Washer | Michigan |
| 44 | Grace Lewis THIS PERSON | 18 | Daughter | Helping Mother | Michigan |
| 45 | Joseph Lewis | 16 | Son | — | Michigan |
| 46 | Marcella Lewis | 15 | Daughter | — | Michigan |
| 47 | Algen Lewis | 11 | Son | — | Michigan |
| 48 | Martha Lewis | 9 | Daughter | — | Michigan |
| 49 | Ruth Lewis | 4 | Daughter | — | Michigan |
| 50 | James Lewis | 3 | Son | — | Michigan |
| 51 | Alfred Lewis | 1 | Son | — | Michigan |
| 52 | Robert Blair | 59 | Head | Shipping Clerk | Missouri |
| 53 | Lydia Blair | 46 | Wife | Inspector | Missouri |
| 54 | Thomas Petherbridge | 27 | Head | Welding | Michigan |
| 55 | Lillian Petherbridge | 28 | Wife | Puncher | Michigan |
| 56 | James Petherbridge | 8 | Son | — | Michigan |
| 57 | Joyce Petherbridge | 5 | Daughter | — | Michigan |
| 58 | O. J. Putman | 74 | Head | — | Michigan |
| 59 | Benjamin Slater | 47 | Head | Inspector | Michigan |
| 60 | Alma Slater | 46 | Wife | — | Michigan |
| 61 | Content Slater | 18 | Daughter | — | Michigan |
| 62 | Augusta Hoff | 64 | Head | — | Michigan |
| 63 | Clarence Hoff | 36 | Son | Press Operator | Michigan |
| 64 | Marlon Hoff | 34 | Son | Gas Station | Michigan |
| 65 | Helena Hoff | 25 | Daughter | Waitress | Michigan |
| 66 | Carl Holmquist | 48 | Head | Press Operator | Michigan |
| 67 | Florence Holmquist | 45 | Wife | — | Michigan |
| 68 | Douglas Holmquist | 17 | Son | — | Michigan |
| 69 | Wilfred Radiceu | 34 | Head | Checker | Michigan |
| 70 | Virginia Radiceu | 24 | Wife | — | Michigan |
| 71 | Elmer Johnson | 32 | Head | Die Maker | Minnesota |
| 72 | Agnes Johnson | 27 | Wife | — | Michigan |
| 73 | Mary Delores Johnson | 3 | Daughter | — | Michigan |
| 74 | Joel Cottrell | 44 | Head | Owner | Michigan |
| 75 | Zonely Cottrell | 41 | Wife | — | Michigan |
| 76 | Elvon Thomas Cottrell | 11 | Son | — | Michigan |
| 77 | Mary Jane Cottrell | 8 | Daughter | — | Michigan |
| 78 | Rebecca Cottrell | 80 | Mother | — | Ohio |
| 79 | William Pallen | 69 | Lodger | — | Michigan |
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)