JW
John Walsh — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this John Walsh across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed), with identified parents Patrick & Robert — first a son (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Walsh |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | SAN FRANCISCO |
| 1935 Residence (County) | SAN FRANCISCO |
| Additional Details | |
| Occupation | Baker |
| Industry | Bread |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1800 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Baker |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1912 |
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 |
|---|---|---|---|---|
| Mary Walsh | Daughter | — | 26 | ~1914 |
| Robert Walsh | Head | — | 56 | ~1884 |
| John Walsh | Son | — | 28 | ~1912 |
| Mary Walsh | Spouse | — | 54 | ~1886 |
Census Appearances
1920
San Francisco, …
Son, age 6
San Francisco, California · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walsh |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Son, age 17
San Francisco, California · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walsh |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Clerk |
| Industry | Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Son, age 28
San-Francisco-County, California · implied b. ~1912 — 4 household members
| Surname | Walsh |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | SAN FRANCISCO |
| 1935 Residence (County) | SAN FRANCISCO |
| Occupation | Baker |
| Industry | Bread |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1800 |
| Highest Grade | H-4 |
| 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 John Walsh across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Patrick Walsh (~0.92 confidence) and father Robert Walsh (~0.92 confidence) and mother Mary Walsh (~0.92 confidence) and mother Mary Walsh (~0.92 confidence) and mother Nellie Walsh (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Patrick Walsh
b. ~1858
Source father
● Household
· direct · ~0.92
Father
Robert Walsh
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Mary Walsh
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Mary Walsh
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Nellie Walsh
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Walsh
Son · 1940 · age 28 · b. ~1912 · California
★ You are viewing this record
Sibling
Mary Walsh
Sibling · 1940 · age 26
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
40 people indexed on this census page (nara:1940:m-t0627-00308-00219)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Barry Vinceloin | 35 | Head | Chief Engineer | Iowa |
| 42 | Sylvia Vinceloin | 29 | Wife | — | Iowa |
| 43 | Stanley Vinceloin | 1 | Son | — | California |
| 44 | Daniel S. Curran | 31 | Head | Bookkeeper | California |
| 45 | Betty Curran | 27 | Wife | — | Germany |
| 46 | Father E. Cummings | 40 | Head | Charwoman | California |
| 47 | Lucille Cummings | 15 | Daughter | — | California |
| 48 | Charles R. Mcnamara | 40 | Head | Clerk | California |
| 49 | Mabel G. Mcnamara | 39 | Wife | — | California |
| 50 | George S. Mason | 30 | Head | Warehouseman | Iowa |
| 51 | Sally L. Mason | 27 | Wife | Operator | California |
| 52 | Frank S. Smith | 55 | Head | Longshoreman | California |
| 53 | Margaret Smith | 52 | Wife | — | California |
| 54 | Frank S. Smith | 20 | Son | Clerk | California |
| 55 | Marjorie Smith | 18 | Daughter | Secretary | California |
| 56 | Samuel J. Clare | 30 | Head | Salesman | California |
| 57 | Catherine Clare | 28 | Wife | Secretary | California |
| 58 | C. Anthony Roberts | 40 | Head | Longshoreman | California |
| 59 | Camille Roberts | 36 | Wife | — | California |
| 60 | Ben N. Elliott | 40 | Head | Carpenter | New York |
| 61 | Margaret Elliott | 35 | Wife | — | California |
| 62 | Robert W. Walsh | 56 | Head | Baker | California |
| 63 | Mary R. Walsh | 54 | Wife | — | California |
| 64 | John J. Walsh THIS PERSON | 28 | Son | Baker | California |
| 65 | Mary S. Walsh | 26 | Daughter | Saleslady | California |
| 66 | William J. Bager | 40 | Head | Truck Driver | California |
| 67 | Josephine Bager | 39 | Wife | — | California |
| 68 | Jennie Bager | 17 | Daughter | — | California |
| 69 | Wm J. Bager | 15 | Son | — | California |
| 70 | Antonia Spanioli | 45 | Head | Scavenger | Italy |
| 71 | Disolina Spanioli | 39 | Wife | — | Italy |
| 72 | George Spanioli | 16 | Son | — | California |
| 73 | John J. O'Connell | 50 | Head | Janitor | Eire |
| 74 | Nellie O'Connell | 46 | Wife | — | Eire |
| 75 | Rita R. O'Connell | 15 | Daughter | — | California |
| 76 | John Leahy | 61 | Roomer | Cribber | Eire |
| 77 | John Sullivan | 57 | Roomer | Laborer | Eire |
| 78 | John R. O'Neil | 59 | Head | Floorman | Wisconsin |
| 79 | Callie O'Neil | 55 | Wife | — | Minnesota |
| 80 | Richard O'Neil | 15 | Son | — | California |
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)