JP
John Power — 1930 US Census Record
Linked across censuses1930 United States Federal Census · San Francisco, California
Our Model Tree links this John Power across the 1920, 1930 and 1940 US Censuses in San Francisco, California (XGBoost, ~Confirmed) — first a head (b.~1883), then head of a 4-person household.
Age 47
b. ~1883
Male
Head
Born: Ireland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Power |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1904 |
| Age at First Marriage | 25 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Occupation | Laborer |
| Industry | General |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 35 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Laborer |
| Township / Ward | San Francisco City |
| Est. Birth Year | ~1883 |
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 |
|---|---|---|---|---|
| Julia Power | Daughter | — | 20 | ~1910 |
| Helen Power | Daughter | — | 16 | ~1914 |
| Annie Power | Spouse | — | 52 | ~1878 |
| John Power | Head | — | 47 | ~1883 |
Census Appearances
1920
San Francisco, …
Head, age 37
San Francisco, California · implied b. ~1883 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Powers |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1904 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Stevedore |
| Industry | Docks |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
San Francisco, …
Head, age 47
San Francisco, California · implied b. ~1883 — 4 household members
| Surname | Power |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1904 |
| Age at First Marriage | 25 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Laborer |
| Industry | General |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 35 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Alameda-County, California
Head, age 58
Alameda-County, California · implied b. ~1882
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Powers |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Single |
| Birthplace | Ireland |
| 1935 Residence (City) | Oakland |
| 1935 Residence (County) | Alameda |
| Naturalization Status | Naturalized |
| Occupation | dishwasher |
| Industry | cafe |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 150 |
| Highest Grade | No 8 |
| 1935 Residence | Calif |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Power across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Power
Head · 1930 · age 47 · b. ~1883 · 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 Francisco, California
Open full size
1930 US Federal Census — San Francisco, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel196:0212)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Balen | 30 | Head | Salesman | California |
| 52 | Edna | 25 | Wife | — | California |
| 53 | Edna | 1 | Daughter | — | California |
| 54 | Joseph | 23 | Boarder | Chauffeur | California |
| 55 | Joseph | 22 | Boarder | Clerk | California |
| 56 | Stephen | 21 | Boarder | — | California |
| 57 | Thomas | 10 | Boarder | — | California |
| 58 | Lawrence Dillon | 31 | Head | Street Car Conductor | United States |
| 59 | Lila Dillon | 26 | Wife | — | Texas |
| 60 | Edna Dillon | 4 | Daughter | — | Texas |
| 61 | Helen M Dillon | 1 | Daughter | — | California |
| 62 | Norma Mullen | 77 | Head | — | England |
| 63 | Alice Mullen | 50 | Daughter | Sales | United States |
| 64 | Edith Mullen | 39 | Daughter | Stenographer | United States |
| 65 | Grace Mullen | 37 | Daughter | Stenographer | United States |
| 66 | Alfred Pruitt | 53 | Head | Sheet Metal Worker | California |
| 67 | Ada Pruitt | 52 | Wife | — | California |
| 68 | Alfred Pruitt | 22 | Son | Book Binder | California |
| 69 | James F Heffernan | 59 | Head | Retired | California |
| 70 | Mary Heffernan | 57 | Wife | — | California |
| 71 | James Heffernan | 21 | Son | Carpenter | California |
| 72 | Frank Kuleyer | 61 | Head | Bookkeeper | Germany |
| 73 | Emma M Kuleyer | 60 | Wife | — | Germany |
| 74 | Frank Kuleyer | 27 | Son | — | California |
| 75 | John Power THIS PERSON | 47 | Head | Laborer | Ireland |
| 76 | Annie Power | 52 | Wife | — | Ireland |
| 77 | Julia T Power | 20 | Daughter | Telephone Operator | California |
| 78 | Helen F Power | 16 | Daughter | — | California |
| 79 | Ellsworth Short | 52 | Head | Chauffeur | California |
| 80 | Nellie Short | 50 | Wife | — | Michigan |
| 81 | Loretta Short | 19 | Daughter | — | California |
| 82 | Frederick Short | 23 | Son | Clerk | California |
| 83 | Arthur Short | 21 | Son | Auto Repair | California |
| 84 | Annie Magee | 50 | Head | — | Ireland |
| 85 | Matthew G Magee | 24 | Son | Clerk | California |
| 86 | Catherine F Magee | 19 | Daughter | Comptometer Op | California |
| 87 | Walter J Magee | 15 | Son | — | California |
| 88 | 22-23 | None | — | — | — |
| 89 | — | None | — | — | — |
| 90 | — | None | — | — | — |
| 91 | — | None | — | — | — |
| 92 | — | None | — | — | — |
| 93 | — | None | — | — | — |
| 94 | — | None | — | — | — |
| 95 | — | None | — | — | — |
| 96 | — | None | — | — | — |
| 97 | — | None | — | — | — |
| 98 | — | None | — | — | — |
| 99 | — | None | — | — | — |
| 100 | — | None | — | — | — |
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)