JM
James Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this James Martin across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Albert & Katie — first a son (b.~1907), then head of a 9-person household.
Age 33
b. ~1907
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Martin |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Truck-driver |
| Industry | Freight |
| Class of Worker | PW |
| Hours Worked | 16 |
| Income (1939) | 300 |
| Highest Grade | H-5 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Truck-Driver |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1907 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Martin | Daughter | — | 12 | ~1928 |
| Helena Martin | Daughter | — | 26 | ~1914 |
| Josephine Martin | Other | — | 2 | ~1938 |
| Barbara Martin | Other | — | 8 | ~1932 |
| Jennie Martin | Other | — | 19 | ~1921 |
| Shirley Martin | Other | — | 4 | ~1936 |
| Samuel Martin | Son | — | 24 | ~1916 |
| James Martin | Son | — | 33 | ~1907 |
| Agnes Martin | Spouse | — | 59 | ~1881 |
Census Appearances
1920
Baltimore, Maryland
Son, age 11
Baltimore, Maryland · implied b. ~1909 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| 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
Baltimore, Maryland
Son, age 23
Baltimore, Maryland · implied b. ~1907 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Garbage Truck |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 33
Baltimore-City-County, Maryland · implied b. ~1907 — 9 household members
| Surname | Martin |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Truck-driver |
| Industry | Freight |
| Class of Worker | PW |
| Hours Worked | 16 |
| Income (1939) | 300 |
| Highest Grade | H-5 |
| 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 James Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Albert Martin (~0.92 confidence) and mother Katie Martin (~0.92 confidence) and mother Agnes Martin (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Albert Martin
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Katie Martin
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Agnes Martin
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Martin
Son · 1940 · age 33 · b. ~1907 · Maryland
★ You are viewing this record
Sibling
Elizabeth Martin
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helena Martin
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Samuel Martin
Sibling · 1940 · age 24
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 — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01511-00686)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Agnes Martin | 59 | Wife | — | Maryland |
| 2 | James Martin THIS PERSON | 33 | Son | Truck-Driver | Maryland |
| 3 | Helena Martin | 26 | Daughter | — | Virginia |
| 4 | Barbara M. Martin | 8 | Grand-daughter | — | Maryland |
| 5 | Samuel Martin | 24 | Son | Sheet Cleaner | Maryland |
| 6 | Jennie Martin | 19 | Daughter-in-law | — | Maryland |
| 7 | Shirley Martin | 4 | Grand-daughter | — | Maryland |
| 8 | Josephine Martin | 2 | Grand-daughter | — | Maryland |
| 9 | Elizabeth Martin | 12 | Daughter | — | Maryland |
| 10 | Anita Cain | 54 | Head | — | Pennsylvania |
| 11 | Edith Cain | 23 | Daughter | Pie-Maker | Pennsylvania |
| 12 | Esther Cain | 22 | Daughter | Iris-Setter | Pennsylvania |
| 13 | Denney Flahie | 6 | Grand-son | — | Maryland |
| 14 | David Smith | 21 | Head | Rail Inspector | North Carolina |
| 15 | Gladys Smith | 17 | Wife | Waitress | Pennsylvania |
| 16 | Evelyn Smith | 1 | Daughter | — | Maryland |
| 17 | Nadie Smith | 52 | Mother | — | North Carolina |
| 18 | Lillian Liebowitz | 45 | Head | — | Russia |
| 19 | Isidore Liebowitz | 17 | Son | — | Maryland |
| 20 | Retta Liebowitz | 12 | Daughter | — | Maryland |
| 21 | David Star | 57 | Head | Proprietor | Russia |
| 22 | Fanny Star | 49 | Wife | — | Russia |
| 23 | Annette Star | 20 | Daughter | Typist | Maryland |
| 24 | Samuel Freedman | 45 | Head | Shoe-Maker | Russia |
| 25 | Rebecca Freedman | 41 | Wife | — | England |
| 26 | Betty Freedman | 14 | Daughter | — | Maryland |
| 27 | Irvin Sather | 22 | Son-in-law | Counter-Man | New York |
| 28 | Anita Sather | 21 | Daughter | — | Maryland |
| 29 | Lawrence Sather | 4 | Grand-son | — | Maryland |
| 30 | Morris Klein | 45 | Head | Cook | Russia |
| 31 | Francis Klein | 43 | Wife | — | Russia |
| 32 | Claire Klein | 16 | Daughter | — | New York |
| 33 | Ethel Paist | 44 | Head | — | Russia |
| 34 | Robert Paist | 12 | Son | — | Maryland |
| 35 | Sara Paist | 5 | Daughter | — | Maryland |
| 36 | Irvin Kran | 42 | Head | Bar-Tender | Maryland |
| 37 | Gertrude Kran | 40 | Wife | Waitress | Maryland |
| 38 | Dora Wagner | 60 | Head | — | Russia |
| 39 | Isidore Wagner | 25 | Son | Newsboy | Maryland |
| 40 | Walter Green | 51 | Head | Salesman | Maryland |
Pedigree Summary
James + 3 siblings
Gen 1 · 3 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)