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Andrew Martin — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Andrew Martin across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed), with identified parents Antonio & Tony — first a son (b.~1919), then head of a 4-person household.
Age 21
b. ~1919
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Martin |
| Given Name | Andrew |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Occupation | Order Clerk |
| Industry | Wholesale |
| Class of Worker | PW |
| Hours Worked | 12 |
| Income (1939) | 1000 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Order Clerk |
| Township / Ward | San Francisco |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Andrew | Age | Birth yr |
|---|---|---|---|---|
| Andrew Martin | Son | — | 21 | ~1919 |
| Hattie Jordan | Other | — | 80 | ~1860 |
| Emily Martin | Head | — | 56 | ~1884 |
| Fredrick Martin | Son | — | 18 | ~1922 |
Census Appearances
1920
San Francisco, …
Son, age
San Francisco, California · implied b. ~1920 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinez |
| Given Name | Andreas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Spain |
| Mother's Birthplace | Spain |
| Occupation | none |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Mother Tongue | Spanish |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Son, age 10
San Francisco, California · implied b. ~1920 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Martinez |
| Given Name | Andrew |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Spain |
| Mother's Birthplace | Spain |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Son, age 21
San-Francisco-County, California · implied b. ~1919 — 4 household members
| Surname | Martin |
| Given Name | Andrew |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | Order Clerk |
| Industry | Wholesale |
| Class of Worker | PW |
| Hours Worked | 12 |
| Income (1939) | 1000 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 Andrew Martin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Antonio Martinez (~0.92 confidence) and father Tony Martinez (~0.92 confidence) and mother Emily Martin (~0.92 confidence) and mother Esperanza Martinez (~0.92 confidence) and mother Hattie Martinez (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Antonio Martinez
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Tony Martinez
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Emily Martin
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Esperanza Martinez
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Hattie Martinez
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Andrew Martin
Son · 1940 · age 21 · b. ~1919 · California
★ You are viewing this record
Sibling
Fredrick Martin
Sibling · 1940 · age 18
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 — San-Francisco-County, California
Open full size
1940 US Federal Census — San-Francisco-County, California
Page Contents
36 people indexed on this census page (nara:1940:m-t0627-00312-00256)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Carroll Wholy | 34 | Son | Wood Worker | California |
| 2 | Maybelle Wholy | 31 | Daughter | — | California |
| 3 | Jesse Noack | 53 | Head | Salesman | California |
| 4 | Alma Noack | 46 | Wife | — | California |
| 5 | Helen Noack | 22 | Daughter | Receptionist | California |
| 6 | Robert Noack | 20 | Son | Shipping Clerk | California |
| 7 | Emily Smeed | 62 | Lodger | Cook-Pastry | California |
| 8 | Hans Borge | 65 | Head | Carpenter | Norway |
| 9 | Petra Borge | 56 | Wife | — | Norway |
| 10 | Jessie Borge | 34 | Daughter | Teacher | California |
| 11 | William Borge | 23 | Son | Carpenter | California |
| 12 | Robert Borge | 14 | Son | — | California |
| 13 | Reubey Gilbert | 37 | Head | Office Manager | England |
| 14 | Ruth Gilbert | 37 | Wife | — | California |
| 15 | Donna Gilbert | 3 | Daughter | — | California |
| 20 | Emily Martin | 56 | Head | — | Canada |
| 21 | Andrew Martin THIS PERSON | 21 | Son | Order Clerk | California |
| 22 | Fredrick Martin | 18 | Son | — | California |
| 23 | Hattie Jordan | 80 | Mother | — | New York |
| 24 | Manuel Mardis | 30 | Head | Teller | California |
| 25 | Theresa Mardis | 27 | Wife | — | California |
| 26 | Carol Mardis | 2 | Daughter | — | California |
| 27 | Sophia Dahlstrom | 72 | Head | — | Sweden |
| 28 | Hilda Dahlstrom | 47 | Daughter | Office Clerk | Illinois |
| 29 | Agnes Dahlstrom | 36 | Daughter | Bookkeeper | California |
| 30 | Marie Kaehler | 59 | Head | — | Germany |
| 31 | Edwin Kaehler | 28 | Son | Photo Co | California |
| 32 | Robley Appel | 43 | Head | Broker | California |
| 33 | Jeanie Appel | 46 | Wife | — | California |
| 34 | James Appel | 11 | Son | — | California |
| 35 | Gustave Wagner | 44 | Head | Mill Worker | Germany |
| 36 | Minnie Wagner | 56 | Wife | — | New York |
| 37 | Arthur Mcdowell | 37 | Head | Private Detective | New York |
| 38 | Frances Mcdowell | 31 | Wife | — | California |
| 39 | Beverly Mcdowell | 6 | Daughter | — | California |
| 40 | Barbara Mcdowell | 4 | Daughter | — | California |
Pedigree Summary
Andrew + 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)