CC
Charles Chapman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marin-County, California
Our Model Tree links this Charles Chapman across the 1920, 1930 and 1940 US Censuses in Marin-County, California (XGBoost, ~Confirmed) — first a head (b.~1874), then head of a 4-person household.
Age 66
b. ~1874
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marin-County, California |
| Surname | Chapman |
| Given Name | Charles E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Tiburon |
| 1935 Residence (County) | Marin |
| Additional Details | |
| Occupation | Postmaster |
| Industry | U.S. mail |
| Class of Worker | GW |
| Hours Worked | 70 |
| Income (1939) | 1150 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Postmaster |
| Township / Ward | Tiburon |
| Est. Birth Year | ~1874 |
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 Charles | Age | Birth yr |
|---|---|---|---|---|
| Charles Chapman | Head | — | 66 | ~1874 |
| Sam Chapman | Son | — | 23 | ~1917 |
| Rose Chapman | Daughter | — | 23 | ~1917 |
| Katie Chapman | Spouse | — | 57 | ~1883 |
Census Appearances
1920
Marin, California
Head, age 45
Marin, California · implied b. ~1875 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chapman |
| Given Name | Charles E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Merchant |
| Industry | General Store |
| Class of Worker | E |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Marin, California
Head, age 56
Marin, California · implied b. ~1874 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chapman |
| Given Name | Charles E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 32 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Merchant |
| Industry | Retail Store |
| Class of Worker | O |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 6500 |
| Radio Set | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Marin-County, California
Head, age 66
Marin-County, California · implied b. ~1874 — 4 household members
| Surname | Chapman |
| Given Name | Charles E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Tiburon |
| 1935 Residence (County) | Marin |
| Occupation | Postmaster |
| Industry | U.S. mail |
| Class of Worker | GW |
| Hours Worked | 70 |
| Income (1939) | 1150 |
| Highest Grade | No 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 Charles Chapman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Charles Chapman
Head · 1940 · age 66 · b. ~1874 · California
★ 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 — Marin-County, California
Open full size
1940 US Federal Census — Marin-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00262-00533)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elizabeth C. Blakeney | 42 | Wife | — | Nevada |
| 2 | Edith E. Blakeney | 18 | Daughter | Housekeeper | California |
| 3 | Marilyn H. Blakeney | 7 | Daughter | — | California |
| 4 | Cathie Jean D. Blakeney | 19 | Lodger | Housekeeper | California |
| 5 | Bonaventure Pereira | 63 | Head | — | Portugal |
| 6 | John W. Austin | 57 | Head | Machinist Helper | Texas |
| 7 | Mary V. Austin | 48 | Wife | — | Texas |
| 8 | Myron E. Stevens | 64 | Head | Painter | Illinois |
| 9 | Charles E. Chapman THIS PERSON | 66 | Head | Postmaster | Illinois |
| 10 | Katie Chapman | 57 | Wife | — | California |
| 11 | Sam B. Chapman | 23 | Son | Ball Player | California |
| 12 | Rose A. Chapman | 23 | Daughter | — | California |
| 13 | Manuel V. Avilla | 57 | Head | Carpenter | Portugal |
| 14 | Mary Avilla | 44 | Wife | — | California |
| 15 | Margaret Avilla | 14 | Daughter | — | California |
| 16 | Victor Avilla | 27 | Son | Attendant | California |
| 17 | Frank Mendonca | 36 | Head | Sweeper | Portugal |
| 18 | Mary L. Mendonca | 25 | Wife | Housekeeper | California |
| 19 | Mary F. Mendonca | 6 | Daughter | — | California |
| 20 | Frank Jr. Mendonca | 5 | Son | — | California |
| 21 | Shirley A. Mendonca | 0 | Daughter | — | California |
| 22 | Frederick J. Bomes | 36 | Head | Machinist | California |
| 23 | Myrtle M. Bomes | 30 | Wife | — | Missouri |
| 24 | Ross E. Gomes | 66 | Head | — | Portugal |
| 25 | Battista Croci | 64 | Head | — | Italy |
| 26 | Francis Croci | 63 | Wife | — | Italy |
| 27 | Aldo Campagna | 22 | Lodger | Apprentice Painter | California |
| 28 | Pauline Valacchi | 51 | Head | — | Italy |
| 29 | Pauline Mcnamara | 31 | Daughter | Machine Operator | California |
| 30 | Charles Mcnamara | 39 | Son-in-law | Car Repair Helper | California |
| 31 | Henry D. Bottarini | 54 | Head | Stock Man | Italy |
| 32 | Mary M. Bottarini | 49 | Wife | — | California |
| 33 | Mary E. Bottarini | 17 | Daughter | — | California |
| 34 | Jennie Parker | 63 | Head | — | Texas |
| 35 | Carlo Milani | 54 | Head | Blacksmith Head | Italy |
| 36 | Angela Milani | 51 | Wife | — | Italy |
| 37 | Frank M. Milani | 20 | Son | Ball Player | California |
| 38 | Jack E. Norberg | 40 | Head | Carpenter | California |
| 39 | Agnes M. Norberg | 39 | Wife | — | Illinois |
| 40 | Eleanore Norberg | 15 | Daughter | — | California |
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)