JL
John Lawrence — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Diego-County, California
Our Model Tree links this John Lawrence across the 1920, 1930 and 1940 US Censuses in San-Diego-County, California (XGBoost, ~Confirmed), with identified parents John & Maude — first a son (b.~1911), then head of a 6-person household.
Age 29
b. ~1911
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Diego-County, California |
| Surname | Lawrence |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Coronado City |
| Additional Details | |
| Occupation | draftsman |
| Industry | Aircraft |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1100 |
| Highest Grade | H-4 |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Draftsman |
| Township / Ward | Coronado City |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Lawrence | Daughter | — | 24 | ~1916 |
| John Lawrence | Head | — | 67 | ~1873 |
| John Lawrence | Son | — | 29 | ~1911 |
| Frank Lawrence | Son | — | 19 | ~1921 |
| Charles Lawrence | Son | — | 21 | ~1919 |
| Novella Lawrence | Spouse | — | 52 | ~1888 |
Census Appearances
1920
San Diego, …
Son, age 8
San Diego, California · implied b. ~1912 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lawrence |
| Given Name | John T |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Iowa |
| Mother's Birthplace | South Dakota |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Diego, …
Son, age 19
San Diego, California · implied b. ~1911 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lawrence |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Iowa |
| Mother's Birthplace | South Dakota |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Diego-County, California
Son, age 29
San-Diego-County, California · implied b. ~1911 — 6 household members
| Surname | Lawrence |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Coronado City |
| Occupation | draftsman |
| Industry | Aircraft |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1100 |
| Highest Grade | H-4 |
| 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 Lawrence across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Lawrence (~0.92 confidence) and mother Maude Lawrence (~0.92 confidence) and father Oliver Lawrence (~0.92 confidence) and father Otis Lawrence (~0.92 confidence) and mother Novella Lawrence (~0.92 confidence) and mother Maude Lawrence (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Lawrence
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Maude Lawrence
b. ~1882
Source mother
● Household
· direct · ~0.92
Father
Oliver Lawrence
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Otis Lawrence
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Novella Lawrence
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Maude Lawrence
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Lawrence
Son · 1940 · age 29 · b. ~1911 · California
★ You are viewing this record
Sibling
Frank Lawrence
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Lawrence
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Lawrence
Sibling · 1940 · age 21
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-Diego-County, California
Open full size
1940 US Federal Census — San-Diego-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00296-00491)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Carolyn Mcdonough | 3 | granddaughter | — | California |
| 2 | Donalda Mcdonough | 1 | granddaughter | — | California |
| 3 | James Kracht | 27 | head | Maintenance Man | Iowa |
| 4 | Margaret Kracht | 25 | wife | — | Iowa |
| 5 | Elaine Kracht | 1 | daughter | — | Iowa |
| 6 | Lyle Kracht | 25 | brother | Maintenance Man | Iowa |
| 7 | Herman Gephart | 29 | boarder | Clerk | Iowa |
| 8 | Richard Mcnamee | 35 | head | Chief Petty Officer | Illinois |
| 9 | Angeline Mcnamee | 32 | wife | — | Oregon |
| 10 | Robert Rankin | 40 | head | Locomotive Fireman | Scotland |
| 11 | Alice Rankin | 26 | wife | — | Italy |
| 12 | Edward Rankin | 24 | brother | Boilermaker | Canada English |
| 13 | John Lawrence | 67 | head | — | New Jersey |
| 14 | Novella Lawrence | 52 | wife | — | Maryland |
| 15 | John Lawrence THIS PERSON | 29 | son | Draftsman | California |
| 16 | Mary Lawrence | 24 | daughter | — | California |
| 17 | Charles Lawrence | 21 | son | Mechanic | Florida |
| 18 | Frank Lawrence | 19 | son | Delivery Boy | Florida |
| 19 | Blake Ferrell | 34 | head | Weight Master | Georgia |
| 20 | Wilma Ferrell | 28 | wife | — | Iowa |
| 21 | Harry Parsons | 38 | head | Quartermaster Sergt | Pennsylvania |
| 22 | Evelyn Parsons | 26 | wife | — | New York |
| 23 | John Lott | 26 | head | Chief Commissary Steward | Connecticut |
| 24 | Dorothy Lott | 23 | wife | — | New York |
| 25 | Dorothy Lott | 2 | daughter | — | California |
| 26 | Delbert Nethercutt | 26 | head | Photographer | Oregon |
| 27 | Norma Nethercutt | 26 | wife | — | Oregon |
| 28 | Delbert Nethercutt | 1 | son | — | California |
| 29 | Anne Nethercutt | 0 | daughter | — | California |
| 30 | Grover Childress | 29 | head | Radio Man | Oklahoma |
| 31 | Pauline Childress | 25 | wife | — | Iowa |
| 32 | Robert Childress | 1 | son | — | California |
| 33 | Henry Angelier | 60 | head | — | Connecticut |
| 34 | Lillian Moyers | 56 | head | Practical Nurse | Arkansas |
| 35 | Gerald Wellington | 32 | head | Gardener | California |
| 36 | Ethel Wellington | 28 | wife | — | Washington |
| 37 | Lona Mae Wellington | 10 | daughter | — | Montana |
| 38 | Pedro Decasalas | 41 | head | Waiter | Philippines |
| 39 | Margarita Decasalas | 35 | wife | — | Mexico |
| 40 | Joseph Decasalas | 10 | son | — | California |
Pedigree Summary
John + 3 siblings
Gen 1 · 6 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)