JF
John Flynn — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this John Flynn across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed), with identified parents Jack & Harriet — first a son (b.~1911), then head of a 2-person household.
Age 29
b. ~1911
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Flynn |
| Given Name | John W. (BB) |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Occupation | Laborer |
| Industry | Construction |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 250 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Laborer |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1911 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Jack Flynn | Head | — | 66 | ~1874 |
| John Flynn | Son | — | 29 | ~1911 |
Census Appearances
1920
San Francisco, …
Son, age 9
San Francisco, California · implied b. ~1911 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flynn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| 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 19
San Francisco, California · implied b. ~1911 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flynn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Son, age 29
San-Francisco-County, California · implied b. ~1911 — 2 household members
| Surname | Flynn |
| Given Name | John W. (BB) |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | Laborer |
| Industry | Construction |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 250 |
| Highest Grade | Hs 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 Flynn across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Jack Flynn (~0.92 confidence) and mother Harriet Flynn (~0.92 confidence) and father John Flynn (~0.92 confidence) and father Hugh Flynn (~0.60 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.84
Father
Jack Flynn
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Harriet Flynn
b. ~1889
Source mother
● Household
· direct · ~0.92
Father
John Flynn
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Hugh Flynn
b. ~1900
Source father
● Household
· direct · ~0.6
This person
Anchor record
John Flynn
Son · 1940 · age 29 · b. ~1911 · 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-t0627-00305-00647)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Theodora Mariano | 31 | Head | Steward | Philippines |
| 42 | Edwin Curtis | 41 | Roomer | Stevedore | California |
| 43 | Edward Curtis | 13 | Roomer | — | California |
| 44 | Leony B. Pasay | 36 | Head | Janitor | Philippines |
| 45 | Rita Pasay | 20 | Wife | — | Arkansas |
| 46 | Bennie Jo Pasay | 3 | Daughter | — | Washington |
| 47 | Adrian Paneyra | 36 | Head | Busboy | Philippines |
| 48 | Victoria Paneyra | 34 | Wife | — | Philippines |
| 49 | Adrian Jr. Paneyra | 9 | Son | — | California |
| 50 | Manuel Paneyra | 3 | Son | — | California |
| 51 | Cipriano Paneyra | 32 | Brother | Busboy | Philippines |
| 52 | Vincent Agbayani | 27 | Nephew | Dishwasher | Philippines |
| 53 | Conrad Bernardo | 29 | Head | Janitor | Philippines |
| 54 | Norma Bernardo | 18 | Wife | — | California |
| 55 | Michael Bernardo | 2 | Son | — | California |
| 56 | Zoilo Arriola | 35 | Head | Houseboy | Philippines |
| 57 | Felicia Arriola | 17 | Wife | — | Hawaii |
| 58 | Victor Arriola | 1 | Son | — | California |
| 59 | Robert Arriola | 30 | Cousin | Elevator Opr. | Philippines |
| 60 | Edward Moran | 76 | Head | — | Massachusetts |
| 61 | Nils H. Holmstrom | 50 | Head | Orderly | Sweden |
| 62 | Cleve Jefferson | 37 | Head | Salesman | England |
| 63 | Beatrice Jefferson | 30 | Wife | Nurse | Canada English |
| 64 | Glenn J. Hinch | 28 | Head | Stockman | California |
| 65 | Helen Hinch | 25 | Wife | Manager | Oregon |
| 66 | Virginia Wilson | 30 | Head | Waitress | Arkansas |
| 67 | Lee Day | 42 | Head | Janitor | Michigan |
| 68 | William D. Armstrong | 50 | Head | Elevator Opr. | Ohio |
| 69 | Iona Armstrong | 34 | Wife | Waitress | Iowa |
| 70 | Arthur O'Brien | 15 | Step-son | New Worker | California |
| 71 | Stanley C. Miller | 47 | Head | Salesman | Wisconsin |
| 72 | Mabel Miller | 37 | Wife | Waitress | Kentucky |
| 73 | Anne Shilton | 39 | Head | Typist | California |
| 74 | George H. Karohadian | 51 | Head | Salesman | Russia |
| 75 | Lucille Karohadian | 40 | Wife | — | Russia |
| 76 | Alford Karohadian | 23 | Son | Salesman | California |
| 77 | Leslie Karohadian | 18 | Son | New Worker | California |
| 78 | George Jr. Karohadian | 16 | Son | New Worker | California |
| 79 | Jack H. Flynn | 66 | Head | — | Wisconsin |
| 80 | John W. (Bb) Flynn THIS PERSON | 29 | Son | Laborer | California |
Pedigree Summary
John
Gen 1 · 4 parents
~0.84
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)