JL
John Lamb — 1930 US Census Record
Linked across censuses1930 United States Federal Census · San Diego, California
Our Model Tree links this John Lamb across the 1920, 1930 and 1940 US Censuses in San Diego, California (XGBoost, ~Confirmed) — first a head (b.~1891), then head of a 4-person household.
Age 39
b. ~1891
Male
Head
Born: Scotland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | San Diego, California |
| Surname | Lamb |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1917 |
| Age at First Marriage | 21 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Additional Details | |
| Occupation | Salesman |
| Industry | Auto Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 25 |
| Veteran | No |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Salesman |
| Township / Ward | San Diego City |
| Est. Birth Year | ~1891 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Helen Lamb | Spouse | — | 35 | ~1895 |
| John Lamb | Son | — | 14 | ~1916 |
| John Lamb | Head | — | 39 | ~1891 |
| Dorothy Lamb | Daughter | — | 16 | ~1914 |
Census Appearances
1920
San Diego, …
Head, age 29
San Diego, California · implied b. ~1891 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lamb |
| Given Name | John L |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1916 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Salesman |
| Industry | Auto Garage |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Scotch |
| Home Owned/Rented | R |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1930
San Diego, …
Head, age 39
San Diego, California · implied b. ~1891 — 4 household members
| Surname | Lamb |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1917 |
| Age at First Marriage | 21 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Salesman |
| Industry | Auto Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 25 |
| Veteran | No |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
San-Diego-County, California
Other, age 50
San-Diego-County, California · implied b. ~1890 — 28 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lamb |
| Given Name | John L |
| Relationship to Head | Trans |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | San Diego |
| 1935 Residence (County) | San Diego |
| Naturalization Status | Naturalized |
| Occupation | Salesman |
| Industry | Wholesale Co |
| Class of Worker | PW |
| Hours Worked | 80 |
| Income (1939) | 274 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Lamb across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Lamb
Head · 1930 · age 39 · b. ~1891 · California
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — San Diego, California
Open full size
1930 US Federal Census — San Diego, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel192:0348)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Michael Sullivan | 68 | Head | Odd Jobs | New York |
| 52 | Jane Sullivan | 65 | Wife | None | Illinois |
| 53 | Douglas L. Roberts | 26 | Head | Buyer | Canada-English |
| 54 | Helen L. Roberts | 22 | Wife | None | Colorado |
| 55 | Samuel Saunders | 47 | Head | Printer | England |
| 56 | Emma Saunders | 47 | Wife | Tailoress | England |
| 57 | Lyle U. Duncan | 26 | Head | Accountant | Wyoming |
| 58 | Arzell M. Duncan | 28 | Wife | None | Kansas |
| 59 | Carolyn M. Duncan | 2 | Daughter | None | California |
| 60 | Margaret Q. Stover | 78 | Head | None | Illinois |
| 61 | Orville W. Carpenter | 33 | Head | Plumber | Missouri |
| 62 | Lillian Carpenter | 30 | Wife | Saleslady | California |
| 63 | Robert D. Nelson | 56 | Head | Contractor | Missouri |
| 64 | Herbert G. Nelson | 29 | Son | Mechanic | Missouri |
| 65 | Frank W. Nelson | 49 | Brother | Mechanic | Missouri |
| 66 | James W. Erickson | 56 | Head | Broker | Denmark |
| 67 | Blanche G. Erickson | 56 | Wife | None | Connecticut |
| 68 | Joy M. Erickson | 21 | Daughter | Saleslady | Arizona |
| 69 | Enos G. Erickson | 19 | Daughter | Operator | California |
| 70 | Maud B. Davy | 47 | Head | Manager | Ohio |
| 71 | Vernon B. Davy | 26 | Son | Mason | Michigan |
| 72 | Vernon B. Jr. Davy | 4 | Grandson | None | California |
| 73 | William A. Park | 48 | Head | Salesman | Kansas |
| 74 | Vora E. Park | 45 | Wife | None | Iowa |
| 75 | Ruth D. Park | 14 | Daughter | None | Iowa |
| 76 | Betty L. Park | 10 | Daughter | None | Iowa |
| 77 | Roy E. Cameron | 36 | Head | Teacher | Missouri |
| 78 | Ruth E. Cameron | 36 | Wife | None | Nebraska |
| 79 | James G. Sieglieger | 40 | Head | Delivery Clerk | Kansas |
| 80 | Mabel E. Sieglieger | 42 | Wife | None | Colorado |
| 81 | Alice M. Sieglieger | 13 | Daughter | None | Kansas |
| 82 | Louis J. Sieglieger | 12 | Son | None | California |
| 83 | Louise J. Sieglieger | 64 | Mother | None | Illinois |
| 84 | Raymond H. Traut | 36 | Head | Foreman | Minnesota |
| 85 | Isola J. Traut | 35 | Wife | None | Washington |
| 86 | Helen M. Traut | 13 | Daughter | None | California |
| 87 | Dorothy M. Harmon | 18 | Step-Daughter | None | California |
| 88 | Donald W. Harmon | 15 | Step-Son | None | Arizona |
| 89 | Clarence Harrison | 35 | Head | Clerk | Missouri |
| 90 | Lottie M. Harrison | 33 | Wife | None | Kansas |
| 91 | Carol Harrison | 17 | Daughter | None | Kansas |
| 92 | Betty Harrison | 11 | Daughter | None | Kansas |
| 93 | John E. Lamb THIS PERSON | 39 | Head | Salesman | Scotland |
| 94 | Helen S. Lamb | 35 | Wife | None | California |
| 95 | Dorothy Lamb | 16 | Daughter | None | California |
| 96 | John E. Jr. Lamb | 14 | Son | None | California |
| 97 | Gerald R. Helen | 26 | Head | Salesman | Nebraska |
| 98 | Chrystal Helen | 24 | Wife | None | Illinois |
| 99 | Rodney Helen | 1 | Son | None | California |
| 100 | Gernie D. Doggett | 60 | Head | Publisher & Importer | Virginia |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)