FL
Frank Lynch — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Frank Lynch across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed), with identified parents Frank & Anna — first a son (b.~1907), then head of a 5-person household.
Age 33
b. ~1907
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Lynch |
| Given Name | Frank |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Occupation | Boxmaker |
| Industry | National Lead Co |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 1597 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Boxmaker |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1907 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Frank | Age | Birth yr |
|---|---|---|---|---|
| William Lynch | Son | — | 22 | ~1918 |
| Edward Lynch | Son | — | 28 | ~1912 |
| Anna Weith | Head | — | 60 | ~1880 |
| Frank Lynch | Son | — | 33 | ~1907 |
| John Lynch | Son | — | 19 | ~1921 |
Census Appearances
1920
San Francisco, …
Son, age 12
San Francisco, California · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | Franky |
| 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 22
San Francisco, California · implied b. ~1908 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | Frank J Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Occupation | Salesman |
| Industry | Sport Goods |
| 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 33
San-Francisco-County, California · implied b. ~1907 — 5 household members
| Surname | Lynch |
| Given Name | Frank |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | Boxmaker |
| Industry | National Lead Co |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 1597 |
| Highest Grade | No 8 |
| 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 Frank Lynch across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frank Lynch (~0.92 confidence) and mother Anna Weith (~0.92 confidence) and mother Elizabeth Lynch (~0.92 confidence) and mother Ethel Lynch (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Lynch
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Anna Weith
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Lynch
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Ethel Lynch
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Frank Lynch
Son · 1940 · age 33 · b. ~1907 · California
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Sibling
William Lynch
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Lynch
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Lynch
Sibling · 1940 · age 28
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-t0627-00300-00700)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Emerson Daggett | 30 | Head | Foreman | Washington |
| 2 | Helen Daggett | 26 | Wife | Saleswoman | Minnesota |
| 3 | Claude Williams | 37 | Head | Presser | Kentucky |
| 4 | Muriam Williams | 35 | Wife | Practical Nurse | Kentucky |
| 5 | Fred Larson | 34 | Head | Window Shaver | California |
| 6 | Marcella Larson | 33 | Wife | 0 | California |
| 7 | Charles Larson | 77 | Head | 0 | Sweden |
| 8 | Hilda Larson | 67 | Wife | 0 | Norway |
| 9 | Godfrey Larson | 42 | Son | Fireman | California |
| 10 | Jenis Glastery | 73 | Head | Cutter | Denmark |
| 11 | Marie Glastery | 67 | Wife | 0 | Germany |
| 12 | Edward Green | 44 | Head | Porter | California |
| 13 | Harriet Green | 40 | Wife | Orderly | Wisconsin |
| 14 | Margaret Green | 70 | Mother | 0 | California |
| 15 | Mike Koslov | 60 | Head | 0 | Russia |
| 16 | Katie Koslov | 53 | Wife | 0 | Russia |
| 17 | Alexander Koslov | 29 | Son | Clerk | California |
| 18 | Dorothy Koslov | 25 | Daughter in law | Laundress | California |
| 19 | Olga Koslov | 25 | Daughter | Laundress | California |
| 20 | Nathan Solter | 29 | Head | Intern | New York |
| 21 | Rebecca Solter | 30 | Wife | Social Welfare Worker | Russia |
| 22 | Linda Solter | 3 | Daughter | 0 | California |
| 23 | Fania Ulvill | 25 | Sister in law | Sales Lady | Russia |
| 24 | Nick Koslov | 32 | Head | Warnish Cooker | California |
| 25 | Maude Koslov | 24 | Wife | 0 | Washington |
| 26 | Walter Turner | 59 | Head | Tire Regrover | Kentucky |
| 27 | Etta Turner | 52 | Wife | 0 | Indiana |
| 28 | Melvin Turner | 20 | Son | Helps Father | Illinois |
| 29 | Mary Turner | 15 | Daughter | 0 | Indiana |
| 30 | Anna Weith | 60 | Head | 0 | California |
| 31 | Frank Lynch THIS PERSON | 33 | Son | Boxmaker | California |
| 32 | Edward Lynch | 28 | Son | Porter | California |
| 33 | William Lynch | 22 | Son | Errand Boy | California |
| 34 | John Lynch | 19 | Son | Paper Salesman | California |
| 35 | Americo Tula | 43 | Head | Messenger | So. America |
| 36 | Lina Tula | 35 | Wife | 0 | Germany |
| 37 | Herman Scherf | 59 | Head | Coppersmith | California |
| 38 | Ida Scherf | 59 | Wife | 0 | Iowa |
| 39 | Robert Cooper | 24 | Head | Clerk | Hawaii |
| 40 | Alice Cooper | 24 | Wife | 0 | California |
Pedigree Summary
Frank + 3 siblings
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)