EJ
Elmer Johnson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Alameda, California
Our Model Tree links this Elmer Johnson across the 1910, 1920 and 1930 US Censuses in Alameda, California (XGBoost, ~Confirmed), with identified parents Chris & Christian — first a head (b.~1901), then head of a 5-person household.
Age 29
b. ~1901
Male
Head
Born: California
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Alameda, California |
| Surname | Johnson |
| Given Name | Elmer |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 22 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Additional Details | |
| Occupation | Clerk |
| Industry | S. P. Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 50.00 |
| Veteran | no |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Clerk |
| Township / Ward | City Of Alameda |
| Est. Birth Year | ~1901 |
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 1930 census.
| Name | Relation to head | Relative to Elmer | Age | Birth yr |
|---|---|---|---|---|
| Helen Johnson | Daughter | — | 5 | ~1925 |
| Elmer Johnson | Head | — | 29 | ~1901 |
| Emmett Johnson | Son | — | 4 | ~1926 |
| Thomas Johnson | Son | — | 1 | ~1929 |
| Rose Johnson | Spouse | — | 27 | ~1903 |
Census Appearances
1910
Alameda, California
Son, age 9
Alameda, California · implied b. ~1901 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Elmer |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1920
Alameda, California
Son, age 19
Alameda, California · implied b. ~1901 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Elmer |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Bookkeeper |
| Industry | Coal Yard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Alameda, California
Head, age 29
Alameda, California · implied b. ~1901 — 5 household members
| Surname | Johnson |
| Given Name | Elmer |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 22 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Clerk |
| Industry | S. P. Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 50.00 |
| Veteran | no |
| 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 Elmer Johnson across 3 US Census years (1910, 1920 and 1930) in Alameda, California, using XGBoost record linkage. Identified parents: father Chris Johnson (~0.92 confidence) and father Christian Johnson (~0.92 confidence) and mother Marie Johnson (~0.92 confidence) and mother Marie Johnson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Chris Johnson
b. ~1854
Source father
● Household
· direct · ~0.92
Father
Christian Johnson
b. ~1860
Source father
● Household
· direct · ~0.92
Mother
Marie Johnson
b. ~1863
Source mother
● Household
· direct · ~0.92
Mother
Marie Johnson
b. ~1866
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Elmer Johnson
Head · 1930 · age 29 · b. ~1901 · 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 — Alameda, California
Open full size
1930 US Federal Census — Alameda, California
Page Contents
50 people indexed on this census page (ia:1930:15thcensuspopula100unit:0544)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | M Mitchell | 68 | Head | None | California |
| 2 | Eleanor De Bernardi | 35 | Niece | None | California |
| 3 | Vera De Bernardi | 14 | Daughter | — | California |
| 4 | Clarence De Bernardi | 40 | Nephew | Shipbuilder | California |
| 5 | James Lyall | 67 | Tenant | Retired | Scotland |
| 6 | Donald Neil White | 63 | Head | Dry Goods Salesman | Scotland |
| 7 | Ann Mary White | 30 | Daughter | None | California |
| 8 | Donald John White | 29 | Son | Underwriter | California |
| 9 | Noble Russell | 61 | Head | Housewife | Mass. |
| 10 | Frederick Russell | 61 | Husband | Lawyer | Calif. |
| 11 | Helen Russell | 30 | Daughter | Nurse | California |
| 12 | H. G. Frost | 25 | Head | Grocer | California |
| 13 | Estelle Frost | 34 | Wife | Housewife | California |
| 14 | Harlan Jr. Frost | 3 | Son | — | California |
| 15 | Caroline Pratt | 51 | Lodger | Physiotherapy (Nurse) | Scotland |
| 16 | Alice B. Bowen | 59 | Head | Home Maker | California |
| 17 | Mason Bowen | 55 | Brother | Realtor | California |
| 18 | Dorothea Wilkinson | 22 | Head | Housewife | Germany |
| 19 | Edwin Wilkinson | 23 | Son | Secty-Packing Co. | California |
| 20 | Alice C. Ryan | 58 | Head | Housewife | California |
| 21 | Matthew Ryan | 65 | Husband | Salesman | Ireland |
| 22 | Annie Eggers | 70 | Head | Housewife | England |
| 23 | Jack H. Eggers | 46 | Son | Mining Engineer | California |
| 24 | John Marcus Eggers | 18 | Grandson | — | Calif. |
| 25 | Thos. Newton Eggers | 15 | Grandson | — | Calif. |
| 26 | Robert James Eggers | 14 | Grandson | — | Calif. |
| 27 | Mary Elizabeth Eggers | 12 | Granddaughter | — | Calif. |
| 28 | Ann J. Eggers | 10 | Granddaughter | — | Calif. |
| 29 | Lydia Scott Baird | 60 | Head | Cook In Family | Alabama |
| 30 | Catherine Carroll | 50 | Head | Housewife | Ohio |
| 31 | James J. Carroll | 22 | Son | Clerk | Wyoming |
| 32 | Charles G. Carroll | 14 | Son | None | Wyoming |
| 33 | Katherine Buckley | 48 | Lodger | Clerk | Ohio |
| 34 | Adolph Danker | 38 | Lodger | Machinist | Germany |
| 35 | Lucy Mcclellan | 71 | Head | Retired | New York |
| 36 | Ellen Mary Riley | 57 | Head | Housewife | Ireland |
| 37 | Gilbert Riley | 29 | Son | Clerk | England |
| 38 | Leslie Riley | 27 | Son | Clerk | England |
| 39 | Hubert Mccormick | 31 | Head | Salesman | Illinois |
| 40 | Thelma M. Mccormick | 30 | Wife | Housewife | California |
| 41 | Sherl Mccormick | 7 | Son | — | California |
| 42 | Sally Ann Mccormick | 2 | Daughter | — | California |
| 43 | Mary E. P. Terry | 61 | Head | Housewife | Maine |
| 44 | Samuel P. Terry | 68 | Husband | Physician | Indiana |
| 45 | Caroline Bailey | 72 | Head | Housekeeper | Michigan |
| 46 | Elmer Johnson THIS PERSON | 29 | Head | Clerk | California |
| 47 | Rose Johnson | 27 | Wife | Housewife | California |
| 48 | Helen Rose Johnson | 5 | Daughter | — | California |
| 49 | Emmett Johnson | 4 | Son | — | California |
| 50 | Thomas Johnson | 1 | Son | — | California |
Pedigree Summary
Elmer
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 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)