JC
John Chapman — 1940 US Census Record
Model Tree available1940 United States Federal Census · Charles-County, Maryland
Our Model Tree links this John Chapman across the 1920, 1930 and 1940 US Censuses in Charles-County, Maryland (XGBoost, ~Confirmed), with identified parents Eliza & John — first a head (b.~1908), then head of a 5-person household.
Age 32
b. ~1908
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Charles-County, Maryland |
| Surname | Chapman |
| Given Name | John A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Charles |
| Additional Details | |
| Occupation | Operator |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Operator |
| Township / Ward | Election Dist 7 |
| Est. Birth Year | ~1908 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Chapman | Head | — | 32 | ~1908 |
| James Chapman | Son | — | 3 | ~1937 |
| Bruce Chapman | Son | — | 1 | ~1939 |
| John Chapman | Son | — | 5 | ~1935 |
| Mary Chapman | Spouse | — | 29 | ~1911 |
Census Appearances
1920
Charles, Maryland
Son, age 12
Charles, Maryland · implied b. ~1908 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chapman |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Charles, Maryland
Son, age 22
Charles, Maryland · implied b. ~1908 — 29 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chapman |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Charles-County, Maryland
Head, age 32
Charles-County, Maryland · implied b. ~1908 — 5 household members
| Surname | Chapman |
| Given Name | John A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Charles |
| Occupation | Operator |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 John Chapman across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Eliza Robey (~0.92 confidence) and father John Chapman (~0.92 confidence) and mother Irma Chapman (~0.92 confidence) and mother Lillian Greenwell (~0.60 confidence) and mother Edna Chapman (~0.60 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.79
Mother
Eliza Robey
b. ~1875
Source mother
● Household
· direct · ~0.92
Father
John Chapman
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Irma Chapman
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Lillian Greenwell
b. ~1897
Source mother
● Household
· direct · ~0.6
Mother
Edna Chapman
b. ~1907
Source mother
● Household
· direct · ~0.6
This person
Anchor record
John Chapman
Head · 1940 · age 32 · b. ~1908 · Maryland
★ 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 — Charles-County, Maryland
Open full size
1940 US Federal Census — Charles-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01546-00441)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Margaret Hine | 35 | Lodger | Saleslady | North Carolina |
| 42 | Rudolph J Isom | 32 | Head | Laborer | Maryland |
| 43 | Martha J Isom | 27 | Wife | Maid | Maryland |
| 44 | Russell Isom | 12 | Son | — | Maryland |
| 45 | Mary J Isom | 11 | Daughter | — | Maryland |
| 46 | Agnes V Isom | 9 | Daughter | — | Maryland |
| 47 | Margaret A Isom | 7 | Daughter | — | Maryland |
| 48 | Lillian A Isom | 5 | Daughter | — | Maryland |
| 49 | Joseph R Isom | 2 | Son | — | Maryland |
| 50 | Joseph L Johnson | 29 | Head | Operator | Maryland |
| 51 | Anna C Johnson | 29 | Wife | Maid | Maryland |
| 52 | Francis T Biscoe | 27 | Head | Carpenter | D.C. |
| 53 | Marie T Biscoe | 21 | Wife | — | D.C. |
| 54 | Robert F Biscoe | 4 | Son | — | D.C. |
| 55 | Charles P Biscoe | 1 | Son | — | Maryland |
| 56 | David L Biscoe | 0 | Son | — | Maryland |
| 57 | William F Berry | 65 | Head | Operator | Maryland |
| 58 | James E Berry | 30 | Son | Laborer | Maryland |
| 59 | William J Berry | 26 | Son | Laborer | Maryland |
| 60 | Maggie M Berry | 21 | Daughter | — | Maryland |
| 61 | Bessie M Berry | 15 | Daughter | — | Maryland |
| 62 | Thomas F Berry | 59 | Brother | — | Maryland |
| 63 | John A Chapman THIS PERSON | 32 | Head | Operator | Maryland |
| 64 | Mary H Chapman | 29 | Wife | — | Maryland |
| 65 | John L Chapman | 5 | Son | — | Maryland |
| 66 | James B Chapman | 3 | Son | — | Maryland |
| 67 | Bruce R Chapman | 1 | Son | — | Maryland |
| 68 | Carroll Mcpherson | 53 | Head | Operator | Maryland |
| 69 | Gertie Mcpherson | 52 | Wife | — | Maryland |
| 70 | Susie Mcpherson | 18 | Daughter | Maid | Maryland |
| 71 | Katherine Mcpherson | 16 | Daughter | — | Maryland |
| 72 | Margaret Mcpherson | 14 | Daughter | — | Maryland |
| 73 | Clara May Mcpherson | 11 | Daughter | — | Maryland |
| 74 | Azale Sarah Mcpherson | 5 | Granddau | — | Maryland |
| 75 | Anthony L Kraft | 34 | Head | Operator | Michigan |
| 76 | Eva R Kraft | 24 | Wife | — | Maryland |
| 77 | Anthony J Kraft | 7 | Son | — | Maryland |
| 78 | Paul R Kraft | 5 | Son | — | Maryland |
| 79 | Jenkins F Lyons | 25 | Servant | Laborer | Maryland |
| 80 | Theodore R Lyles | 39 | Head | Operator | Maryland |
Related Census Records
Pedigree Summary
John
Gen 1 · 5 parents
~0.79
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)