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 Margaret & Margaret — first a son (b.~1908), then head of a 6-person household.
Age 32
b. ~1908
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Walsh |
| Given Name | John R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco City |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Occupation | Elevator Operator |
| Industry | Municipal Memorial Bldg |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Elevator Operator |
| Township / Ward | San Francisco City |
| Est. Birth Year | ~1908 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Margaret Walsh | Head | — | 62 | ~1878 |
| Helen Mcmurray | Other | — | 48 | ~1892 |
| Kathleen Kenna | Other | — | 28 | ~1912 |
| James Mcmurray | Other | — | 60 | ~1880 |
| Helen Kenna | Other | — | 20 | ~1920 |
| John Walsh | Son | — | 32 | ~1908 |
Census Appearances
1920
San Francisco, …
Son, age 12
San Francisco, California · implied b. ~1908 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walsh |
| Given Name | John R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Son, age 21
San Francisco, California · implied b. ~1909 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walsh |
| Given Name | John R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Occupation | yes |
| Industry | Clerk |
| Class of Worker | Bond |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Son, age 32
San-Francisco-County, California · implied b. ~1908 — 6 household members
| Surname | Walsh |
| Given Name | John R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco City |
| 1935 Residence (County) | San Francisco |
| Occupation | Elevator Operator |
| Industry | Municipal Memorial Bldg |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| 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: mother Margaret Walsh (~0.92 confidence) and mother Margaret Walsh (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Margaret Walsh
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Margaret Walsh
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Walsh
Son · 1940 · age 32 · b. ~1908 · California
★ 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 — 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-t0627-00308-00655)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Laura F Smith | 77 | Mother in law | — | California |
| 2 | John Edward Postag | 34 | Head | Milk Wagon Driver | California |
| 3 | Betty May Postag | 31 | Wife | Dancing Teacher | California |
| 4 | Mrs. Jennie May | 67 | Mother in-law | — | Germany |
| 5 | Genevieve Postag | 23 | Sister | Office-Clerk | California |
| 6 | Patrick J. Ruane | 45 | Head | Maintenance Plasterer | Northern Ireland |
| 7 | Mary E. Ruane | 45 | Wife | — | California |
| 8 | Patricia Ruane | 18 | Daughter | — | California |
| 9 | Mary E Ruane | 16 | Daughter | — | California |
| 10 | Bernadette Ruane | 13 | Daughter | — | California |
| 11 | Anna F. Irving | 66 | Head | — | California |
| 12 | Irene Bischoff | 46 | Daughter | — | California |
| 13 | Harold Foss | 24 | Grand-son | Bell Boy Private Club | California |
| 14 | Eugene Foss | 20 | Grand-son | Caddy | California |
| 15 | Louis Bischoff | 8 | Grand-son | — | California |
| 16 | William Mcguire | 24 | Grand-son | Laborer Tent Factory | California |
| 17 | Charles Christenson | 46 | Lodger | Shipping-Clerk | California |
| 18 | Richard Treacy | 25 | Lodger | Ticket Clerk Pam-Marvel | California |
| 19 | Emma Mark | 79 | Head | — | New York |
| 20 | Henry Daniel | 72 | Head | Furniture Upholsterer | California |
| 21 | Catherine Daniel | 64 | Wife | — | California |
| 22 | Vincent Mclaughlin | 25 | Head | Laborer-Paving And Service | California |
| 23 | Mary Mclaughlin | 24 | Wife | — | California |
| 24 | Max Kauffmann | 30 | Head | Temporary Mail Carrier | Germany |
| 25 | Rose Kauffmann | 32 | Wife | — | Canada |
| 26 | Norma Kauffmann | 8 | Daughter | — | California |
| 27 | Hannah Wilson | 61 | Head | House Keeper | California |
| 28 | James Wilson | 65 | Husband | Janitor | California |
| 29 | Margaret Walsh | 62 | Head | — | California |
| 30 | John R Walsh THIS PERSON | 32 | Son | Elevator Operator | California |
| 31 | Helen Mcmurray | 48 | Sister | — | California |
| 32 | James Mcmurray | 60 | Brother | Municipal Office Clerk | California |
| 33 | Kathleen Kenna | 28 | Cousin | Office Clerk | California |
| 34 | Helen Kenna | 20 | Cousin | Office Clerk | California |
| 35 | Nelson M Hope | 65 | Head | Electrician Bldg. Constr. | Kansas |
| 36 | Carolyn F Hope | 57 | Wife | — | California |
| 37 | Adeline Kenoll | 23 | Step Daughter | Stenographer-Secretary | California |
| 38 | Rose E Prat | 50 | Head | Manager Apartment House | France |
| 39 | Rose M Prat | 24 | Daughter | Teacher Of Physical Education | California |
| 40 | John R Sisola | 25 | Head | Floor Plant Sales Lady | California |
Pedigree Summary
John
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)