JM
James Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Maricopa-County, Arizona
Our Model Tree links this James Martin across the 1920, 1930 and 1940 US Censuses in Maricopa-County, Arizona (XGBoost, ~Confirmed), with identified parents Pearl & Q — first a son (b.~1919), then head of a 3-person household.
Age 21
b. ~1919
Male
Son
Born: Arizona
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Maricopa-County, Arizona |
| Surname | Martin |
| Given Name | James L. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | Phoenix City |
| 1935 Residence (County) | Maricopa |
| Additional Details | |
| Occupation | Electrician Helper |
| Industry | Retail & Repair Shop |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 500 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
| Occupation | Electrician Helper |
| Township / Ward | Phoenix City |
| Est. Birth Year | ~1919 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Vivian Martin | Daughter | — | 19 | ~1921 |
| Pearl Keefer | Head | — | 50 | ~1890 |
| James Martin | Son | — | 21 | ~1919 |
Census Appearances
1920
Maricopa, Arizona
Son, age 1
Maricopa, Arizona · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martin |
| Given Name | James S |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Arizona |
| Father's Birthplace | Arkansas |
| Mother's Birthplace | Arkansas |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
1930
Maricopa, Arizona
Son, age 12
Maricopa, Arizona · implied b. ~1918 — 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 | 12 |
| Marital Status | Single |
| Birthplace | Arizona |
| Father's Birthplace | Arkansas |
| Mother's Birthplace | Arkansas |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
1940
Maricopa-County, Arizona
Son, age 21
Maricopa-County, Arizona · implied b. ~1919 — 3 household members
| Surname | Martin |
| Given Name | James L. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Arizona |
| 1935 Residence (City) | Phoenix City |
| 1935 Residence (County) | Maricopa |
| Occupation | Electrician Helper |
| Industry | Retail & Repair Shop |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 500 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Arizona |
| Birth Country | United States |
| Birthplace (normalized) | arizona |
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: mother Pearl Keefer (~0.92 confidence) and father Q Martin (~0.92 confidence) and mother Pearl Martin (~0.92 confidence) and mother Pearl Teener (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Pearl Keefer
b. ~1890
Source mother
● Household
· direct · ~0.92
Father
Q Martin
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Pearl Martin
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Pearl Teener
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Martin
Son · 1940 · age 21 · b. ~1919 · Arizona
★ You are viewing this record
Sibling
Vivian Martin
Sibling · 1940 · age 19
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 — Maricopa-County, Arizona
Open full size
1940 US Federal Census — Maricopa-County, Arizona
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-00105-00068)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Louis Evans | 9 | son | — | Omaha |
| 2 | Rosalie Evans | 8 | daughter | — | Arizona |
| 3 | Mary Evans | 5 | daughter | — | Arizona |
| 7 | Dale P. James | 41 | Head | Mechanic | Wisconsin |
| 8 | Martha James | 35 | wife | Housewife | Wisconsin |
| 9 | Arthur James | 15 | son | — | Wisconsin |
| 10 | Dale Jr. James | 11 | son | — | Wisconsin |
| 11 | Ben P. Humesky | 26 | in-law | Parking Station Attendant | Wisconsin |
| 12 | Edgar M. Pohnert | 31 | Head | Wood Worker | Colorado |
| 13 | Mildred Pohnert | 41 | wife | Housewife | Mexico |
| 14 | Mary L. Neill | 69 | mother-in-law | — | France |
| 15 | Edgar Golden | 59 | Head | Clerical Office Worker | Illinois |
| 16 | Carrie Golden | 67 | wife | Housewife | Vermont |
| 17 | Stanley W. Blakeley | 25 | Head | Carpenter | Nebraska |
| 18 | Ann Blakeley | 21 | wife | Housewife | Illinois |
| 19 | Joseph Friedberg | 73 | Head | — | Latvia |
| 20 | Julia M. Friedberg | 60 | wife | Sales Woman | Connecticut |
| 21 | Noel P. Keehan | 33 | Head | Chief Sanitarian | Texas |
| 22 | Irene L. Keehan | 21 | wife | Housewife | Arizona |
| 23 | John J. Blakeley | 27 | Head | Foreman Or Lumberman | Nebraska |
| 24 | June E. Blakeley | 22 | wife | Housewife | Colorado |
| 25 | Patricia Ann Blakeley | 1 | daughter | — | Arizona |
| 26 | William Parr | 56 | Head | General Contractor | Germany |
| 27 | Bertha Parr | 52 | wife | Housewife | Missouri |
| 28 | William J. Hickey | 46 | Head | City Fireman | Missouri |
| 29 | Della M. Hickey | 35 | wife | Housewife | Michigan |
| 30 | Cora Hickey | 17 | daughter | — | Arizona |
| 31 | Betty Jane Hickey | 15 | daughter | — | Arizona |
| 32 | Michael Hickey | 13 | son | — | Arizona |
| 33 | Marjorie Hickey | 11 | daughter | — | Arizona |
| 34 | Eugene Gilliam | 52 | Head | Advertising Man | Missouri |
| 35 | Laura Marie Gilliam | 38 | wife | Housewife | Illinois |
| 36 | Jo Ann Gilliam | 9 | daughter | — | Arizona |
| 37 | Eugene Jess Gilliam | 5 | son | — | Arizona |
| 38 | Pearl E. Keefer | 50 | Head | Camp Cook | Arkansas |
| 39 | James L. Martin THIS PERSON | 21 | son | Electrician Helper | Arizona |
| 40 | Vivian Martin | 19 | daughter | Saleslady | Arizona |
Pedigree Summary
James + 1 sibling
Gen 1 · 4 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)