JC
John Carter — 1940 US Census Record
Model Tree available1940 United States Federal Census · Montgomery-County, Maryland
Our Model Tree links this John Carter across the 1920, 1930 and 1940 US Censuses in Montgomery-County, Maryland (XGBoost, ~Confirmed), with identified parents Thomas & Thomas — first a son (b.~1920), then head of a 4-person household.
Age 20
b. ~1920
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Maryland |
| Surname | Carter |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | District 1 Laytonsville |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Occupation | Truck Driver |
| Industry | Hauling Contractor |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 420 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Truck Driver |
| Township / Ward | District 1 Laytonsville |
| Est. Birth Year | ~1920 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| William Carter | Head | — | 44 | ~1896 |
| W Carter | Son | — | 25 | ~1915 |
| John Carter | Son | — | 20 | ~1920 |
| Maude Carter | Spouse | — | 39 | ~1901 |
Census Appearances
1920
Montgomery, Maryland
Son, age 2
Montgomery, Maryland · implied b. ~1918 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carter |
| Given Name | John T |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Montgomery, Maryland
Son, age 12
Montgomery, Maryland · implied b. ~1918 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carter |
| Given Name | John |
| 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/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Montgomery-County, Maryland
Son, age 20
Montgomery-County, Maryland · implied b. ~1920 — 4 household members
| Surname | Carter |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | District 1 Laytonsville |
| 1935 Residence (County) | Montgomery |
| Occupation | Truck Driver |
| Industry | Hauling Contractor |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 420 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| 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 Carter across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Carter (~0.92 confidence) and father Thomas Carter (~0.92 confidence) and father William Carter (~0.92 confidence) and mother Maude Carter (~0.92 confidence) and mother Annie Carter (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Carter
b. ~1876
Source father
● Household
· direct · ~0.92
Father
Thomas Carter
b. ~1880
Source father
● Household
· direct · ~0.92
Father
William Carter
b. ~1896
Source father
● Household
· direct · ~0.92
Mother
Maude Carter
b. ~1901
Source mother
● Household
· direct · ~0.92
Mother
Annie Carter
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Carter
Son · 1940 · age 20 · b. ~1920 · Maryland
★ You are viewing this record
Sibling
W Carter
Sibling · 1940 · age 25
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 — Montgomery-County, Maryland
Open full size
1940 US Federal Census — Montgomery-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01553-00010)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Donald F. Fraley | 32 | Head | Mechanic | Maryland |
| 2 | Gladys T. Fraley | 29 | Wife | — | Maryland |
| 3 | Joyce T. Fraley | 3 | Daughter | — | Maryland |
| 4 | George S. Copeland | 52 | Head | Laborer | Maryland |
| 5 | Mary E. Copeland | 36 | Wife | — | Maryland |
| 6 | J. William Copeland | 75 | Father | — | Washington D.C. |
| 7 | L. Elgee Riggs | 74 | Head | — | Maryland |
| 8 | Anna H. Riggs | 70 | Wife | — | Maryland |
| 9 | L. Elgee Jr. Riggs | 31 | Son | Truck Driver | Maryland |
| 10 | Edward B. Worley | 57 | Head | Manager | Maryland |
| 11 | Helen Worley | 61 | Sister | — | Maryland |
| 12 | Laban B. Armstrong | 67 | Head | Farmer | Virginia |
| 13 | S. Maggie Armstrong | 63 | Wife | — | Maryland |
| 14 | Martin J. O'Leary | 48 | Head | Paper Research | Mass. |
| 15 | Agnes G. O'Leary | 45 | Wife | — | Mass. |
| 16 | Mary Ellen O'Leary | 16 | Daughter | — | Mass. |
| 17 | Martin J. Jr. O'Leary | 15 | Son | — | Mass. |
| 18 | Margaret Anne O'Leary | 11 | Daughter | — | Mass. |
| 19 | Richard G. O'Leary | 7 | Son | — | Mass. |
| 20 | Rita Cecilia O'Leary | 6 | Daughter | — | Washington D.C. |
| 21 | Bernard Hassett | 16 | Lodger | — | Washington D.C. |
| 22 | Edward Sproesser | 15 | Lodger | — | Washington D.C. |
| 23 | George P. Farley | 35 | Head | Hauling | Maryland |
| 24 | Gertie W. Farley | 32 | Wife | — | Maryland |
| 25 | George P. Jr. Farley | 12 | Son | — | Maryland |
| 26 | S. Alice Farley | 10 | Daughter | — | Maryland |
| 27 | Jack T. Farley | 7 | Son | — | Maryland |
| 28 | Walter E. Farley | 5 | Son | — | Maryland |
| 29 | Kenneth R. Windham | 35 | Head | Hauling | Maryland |
| 30 | Thelma L. Windham | 31 | Wife | Clerk | Indiana |
| 31 | George R. Carson | 50 | Head | Farmer | Mo. |
| 32 | Ruby K. Carson | 49 | Wife | — | Mo. |
| 33 | Edward Riggs | 55 | Head | Laborer | Maryland |
| 34 | Mollie Riggs | 41 | Wife | Laundress | Maryland |
| 35 | William B. Copeland | 8 | Foster-Son | — | Maryland |
| 36 | S. May Simpson | 6 | Foster-Daughter | — | Maryland |
| 37 | William C. Carter | 44 | Head | Laborer | Maryland |
| 38 | Maude Carter | 39 | Wife | — | Maryland |
| 39 | W. Edward Carter | 25 | Son | Laborer | Maryland |
| 40 | John Carter THIS PERSON | 20 | Son | Truck Driver | Maryland |
Related Census Records
Pedigree Summary
John + 1 sibling
Gen 1 · 5 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)