JL
Joseph Lynch — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Joseph Lynch across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed), with identified parents Mary & Mary — first a son (b.~1916), then head of a 5-person household.
Age 24
b. ~1916
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Lynch |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Occupation | Orderly |
| Industry | Hospital |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 909 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Orderly |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1916 |
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 Joseph | Age | Birth yr |
|---|---|---|---|---|
| Mary Lynch | Head | — | 66 | ~1874 |
| George Lynch | Son | — | 25 | ~1915 |
| Daniel Lynch | Son | — | 41 | ~1899 |
| Joseph Lynch | Son | — | 24 | ~1916 |
| Edward Lynch | Son | — | 26 | ~1914 |
Census Appearances
1920
San Francisco, …
Son, age 4
San Francisco, California · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | Joseph L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| 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 14
San Francisco, California · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lynch |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | California |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Son, age 24
San-Francisco-County, California · implied b. ~1916 — 5 household members
| Surname | Lynch |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | Orderly |
| Industry | Hospital |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 909 |
| Highest Grade | Hs 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 Joseph Lynch across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mary Lynch (~0.92 confidence) and mother Mary Lynch (~0.92 confidence) and father Timothy Lynch (~0.92 confidence) and mother Catherine Lynch (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Lynch
b. ~1873
Source mother
● Household
· direct · ~0.92
Mother
Mary Lynch
b. ~1874
Source mother
● Household
· direct · ~0.92
Father
Timothy Lynch
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Catherine Lynch
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Joseph Lynch
Son · 1940 · age 24 · b. ~1916 · California
★ You are viewing this record
Sibling
George Lynch
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Lynch
Sibling · 1940 · age 41
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Lynch
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
39 people indexed on this census page (nara:1940:m-t0627-00316-00106)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Francis Learned | 20 | Wife | — | California |
| 42 | Mary Learned | 1 | Daughter | — | California |
| 44 | Mary Lynch | 66 | Head | — | California |
| 45 | Daniel Lynch | 41 | Son | Truck Driver | California |
| 46 | Edward Lynch | 26 | Son | Bartender | California |
| 47 | George Lynch | 25 | Son | Truck Driver | California |
| 48 | Joseph Lynch THIS PERSON | 24 | Son | Orderly | California |
| 49 | Mary Blackburn | 72 | Head | — | Scotland |
| 50 | William Blackburn | 38 | Son | Chauffeur | Scotland |
| 51 | Cedric Barner | 27 | Head | Labor | California |
| 52 | Jeanette Barner | 23 | Wife | — | California |
| 53 | John Barner | 1 | Son | — | California |
| 54 | Reginald Stevenson | 31 | Head | Mechanic | California |
| 55 | Ruby Stevenson | 34 | Wife | — | California |
| 56 | Reginald Jr. Stevenson | 7 | Son | — | California |
| 57 | Francis Aurich | 55 | Head | Secretary | California |
| 58 | Albert Steinkamp | 73 | Head | Retired | California |
| 59 | Elizabeth Steinkamp | 67 | Wife | — | Germany |
| 60 | Altomira Riccomi | 63 | Head | — | Italy |
| 61 | Peter Riccomi | 35 | Son | Delivery | Italy |
| 62 | Clorinda Riccomi | 28 | Daughter | — | California |
| 63 | Celestine Riccomi | 25 | Daughter | Clerical | California |
| 64 | Herman Thorman | 55 | Head | General Contracting | Germany |
| 65 | Ruth Thorman | 47 | Wife | — | California |
| 66 | John Thorman | 19 | Son | — | California |
| 67 | William Thorman | 13 | Son | — | California |
| 68 | Ruth Thorman | 8 | Daughter | — | California |
| 69 | Charles Solari | 51 | Head | Owner Of Tavern | California |
| 70 | Camille Ann Solari | 21 | Daughter | Stenographer | California |
| 71 | David Hylan | 51 | Lodger | Shipping Clerk | California |
| 72 | Sophie Hylan | 48 | Sister | — | California |
| 73 | Robert Hylan | 20 | Nephew | Temporary | California |
| 74 | Gerald Lopes | 28 | Son | Clerk | Pennsylvania |
| 75 | Elaine Lopes | 26 | Daughter-in-law | — | California |
| 76 | Theodore Magee | 23 | Head | Painter | New York |
| 77 | Verna Magee | 18 | Wife | — | California |
| 78 | Ronald Magee | 1 | Son | — | California |
| 79 | Cecil Smith | 48 | Head | Carpenter | Canada |
| 80 | Selena Smith | 59 | Wife | — | Canada |
Pedigree Summary
Joseph + 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)