JM
James Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Mercer-County, West Virginia
Our Model Tree links this James Martin across the 1920, 1930 and 1940 US Censuses in Mercer-County, West Virginia (XGBoost, ~Confirmed), with identified parents Roy & Minnie — first a head (b.~1910), then head of a 7-person household.
Age 30
b. ~1910
Male
Head
Born: Virginia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, West Virginia |
| Surname | Martin |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Virginia |
| 1935 Residence (City) | Bluefield City |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Occupation | Janitor |
| Industry | Public Bldg |
| Class of Worker | PW |
| Hours Worked | 72 |
| Income (1939) | 720 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same house |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Occupation | Janitor |
| Township / Ward | Bluefield City |
| Est. Birth Year | ~1910 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Jackeline Martin | Daughter | — | 7 | ~1933 |
| Carolyn Martin | Daughter | — | 1 | ~1939 |
| James Martin | Head | — | 30 | ~1910 |
| David Martin | Son | — | 8 | ~1932 |
| Charles Martin | Son | — | 3 | ~1937 |
| James Martin | Son | — | 10 | ~1930 |
| Elmer Martin | Spouse | — | 29 | ~1911 |
Census Appearances
1920
Mercer, West …
Son, age 12
Mercer, West Virginia · implied b. ~1908 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1930
Mercer, West …
Head, age 21
Mercer, West Virginia · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Virginia |
| Age at First Marriage | 20 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | Janitor |
| Industry | Building |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 1500 |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Mercer-County, West …
Head, age 30
Mercer-County, West Virginia · implied b. ~1910 — 7 household members
| Surname | Martin |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Virginia |
| 1935 Residence (City) | Bluefield City |
| 1935 Residence (County) | Mercer |
| Occupation | Janitor |
| Industry | Public Bldg |
| Class of Worker | PW |
| Hours Worked | 72 |
| Income (1939) | 720 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same house |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
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 James Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Roy Martin (~0.92 confidence) and mother Minnie Martin (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Roy Martin
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Minnie Martin
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Martin
Head · 1940 · age 30 · b. ~1910 · West Virginia
★ 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 — Mercer-County, West Virginia
Open full size
1940 US Federal Census — Mercer-County, West Virginia
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04428-00522)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Minnie Williams | 41 | Lodger | Cook | N. Carolina |
| 42 | Amanda Byrd | 41 | Lodger | Cook | Virginia |
| 43 | Virgie Yates | 55 | Head | Cook | Virginia |
| 44 | Alonzo Johnson | 14 | Grandson | — | West Virginia |
| 45 | Etta Ellis | 50 | Sister | Domestic | West Virginia |
| 46 | Lizzie Haskins | 76 | Mother | — | Virginia |
| 47 | Walter Howard | 58 | Head | — | Virginia |
| 48 | Genevieve Howard | 42 | Wife | Laundress | Virginia |
| 49 | James Howard | 26 | Son | Laborer | Virginia |
| 50 | James Martin THIS PERSON | 30 | Head | Janitor | Virginia |
| 51 | Elmer Martin | 29 | Wife | — | West Virginia |
| 52 | James Jr. Martin | 10 | Son | — | West Virginia |
| 53 | David Martin | 8 | Son | — | West Virginia |
| 54 | Jackeline Martin | 7 | Daughter | — | West Virginia |
| 55 | Charles Martin | 3 | Son | — | West Virginia |
| 56 | Carolyn Martin | 1 | Daughter | — | West Virginia |
| 57 | Martha Blackwell | 53 | Head | Cook | N. Carolina |
| 58 | John Coats | 25 | Son | Delivery Boy | West Virginia |
| 59 | Rufus Coats | 24 | Son | Delivery Boy | West Virginia |
| 60 | Ernest Coats | 18 | Son | New Worker | West Virginia |
| 61 | Martha Coats | 16 | Granddaughter | Nurse | West Virginia |
| 62 | Dealie Cabbel | 50 | Head | Domestic | Virginia |
| 63 | Korn Cabbel | 23 | Daughter | Domestic | West Virginia |
| 64 | Ray Cabbel | 21 | Son | Laborer | West Virginia |
| 65 | Joe Cabbel | 18 | Son | Laborer | West Virginia |
| 66 | Francis Cabbel | 15 | Daughter | — | West Virginia |
| 67 | Emma Cabbel | 13 | Daughter | — | West Virginia |
| 68 | Chester Marley | 41 | Head | Laborer | Tennessee |
| 69 | Kathaleen Marley | 17 | Daughter | — | West Virginia |
| 70 | Robert Marley | 15 | Son | — | Virginia |
| 71 | Albert Marley | 13 | Son | — | West Virginia |
| 72 | Ben Campbell | 51 | Head | Laborer | Virginia |
| 73 | Myrtie Campbell | 47 | Wife | — | Tennessee |
| 74 | Helen Campbell | 23 | Daughter | Teacher | West Virginia |
| 75 | Benjamin Campbell | 21 | Son | Delivery Boy | West Virginia |
| 76 | William Allen | 28 | Son-in-law | Brakeman | Virginia |
| 77 | Ruth Allen | 24 | Daughter | — | West Virginia |
| 78 | Donald Allen | 2 | Grand-son | — | West Virginia |
| 79 | Greek Anderson | 40 | Head | Contractor | Virginia |
| 80 | Etta Anderson | 38 | Wife | — | Virginia |
Pedigree Summary
James
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)