MP
Mary Power — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Los Angeles, California
Our Model Tree links this Mary Power across the 1930 and 1940 US Censuses in Los Angeles, California (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 7-person household.
Age 6
b. ~1924
Female
Daughter
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Los Angeles, California |
| Surname | Power |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Oregon |
| Mother's Birthplace | Oregon |
| Additional Details | |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Santa Monica City |
| Est. Birth Year | ~1924 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| James Power | Son | — | 3 | ~1927 |
| Edward Power | Son | — | 11 | ~1919 |
| James Power | Spouse | — | 36 | ~1894 |
| Luke Power | Son | — | 1 | ~1929 |
| Catherine Power | Daughter | — | 5 | ~1925 |
| William Power | Head | — | 37 | ~1893 |
| Mary Power | Daughter | — | 6 | ~1924 |
Census Appearances
1930
Los Angeles, …
Daughter, age 6
Los Angeles, California · implied b. ~1924 — 7 household members
| Surname | Power |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Oregon |
| Mother's Birthplace | Oregon |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Daughter, age 15
Los-Angeles-County, California · implied b. ~1925 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Powers |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Huntington Pk |
| 1935 Residence (County) | Los Angeles |
| Highest Grade | Hs 1 |
| 1935 Residence | California |
| 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 Mary Power across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Power
Daughter · 1930 · age 6 · b. ~1924 · California
★ You are viewing this record
Sibling
Luke Power
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Power
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Power
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Power
Sibling · 1930 · age 11
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
1930 US Federal Census — Los Angeles, California
Open full size
1930 US Federal Census — Los Angeles, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel167:0162)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | George L Summers | 11 | Daughter | — | California |
| 52 | Margaret Summers | 9 | Daughter | — | California |
| 53 | William Summers | 7 | Son | — | California |
| 54 | John King | 76 | Head | — | Arkansas |
| 55 | Mary E King | 66 | Wife | — | Missouri |
| 56 | Anna M King | 42 | Daughter | Salesman | Missouri |
| 57 | Thomas Fox | 61 | Head | — | Illinois |
| 58 | Elizabeth Fox | 60 | Wife | Saleswoman | California |
| 59 | Jesse G Fox | 32 | Son | Driver | California |
| 60 | Edward Fox | 22 | Son | — | California |
| 61 | William Power | 37 | Head | Salesman | Oregon |
| 62 | James G Power | 36 | Wife | — | Oregon |
| 63 | Edward Power | 11 | Son | — | California |
| 64 | Mary E Power THIS PERSON | 6 | Daughter | — | California |
| 65 | Catherine Power | 5 | Daughter | — | California |
| 66 | James Power | 3 | Son | — | California |
| 67 | Luke Power | 1 | Son | — | California |
| 68 | Verna Spalding | 30 | Head | Teacher | Pennsylvania |
| 69 | Verna Spalding | 2 | Daughter | — | California |
| 70 | Frank R Uda | 51 | Head | Collector | California |
| 71 | Agnes Uda | 48 | Wife | — | California |
| 72 | Frank R Uda | 18 | Son | Student | California |
| 73 | James M Riley | 50 | Head | Salesman | Illinois |
| 74 | Agnes Riley | 46 | Wife | — | Illinois |
| 75 | James Riley | 24 | Son | Salesman | Illinois |
| 76 | Helen Riley | 22 | Daughter | — | Missouri |
| 77 | Henry F Aman | 65 | Head | Salesman | Ohio |
| 78 | Lulu Aman | 65 | Wife | — | Ohio |
| 79 | James Knight | 26 | Head | Clerk | England |
| 80 | Grace Knight | 22 | Wife | — | California |
| 81 | James Knight | 1 | Son | — | California |
| 82 | Grace Knight | 0 | Daughter | — | California |
| 83 | Walter Gibson | 46 | Boarder | Salesman | Ohio |
| 84 | William Sidney | 37 | Head | Salesman | California |
| 85 | Mabel Sidney | 32 | Wife | — | California |
| 86 | William Sidney | 8 | Son | — | California |
| 87 | Velma Sidney | 8 | Daughter | — | California |
| 88 | Donald Sidney | 4 | Son | — | California |
| 89 | Minnie B Tucker | 58 | Head | Worker | Iowa |
| 90 | Earl Tucker | 37 | Son | — | Nebraska |
| 91 | Alice Tucker | 40 | Boarder | Operator | California |
| 92 | Lee Tucker | 52 | Head | Salesman | Iowa |
| 93 | Irene Tucker | 48 | Wife | — | Iowa |
| 94 | Frank Power | 31 | Head | Driver | Kansas |
| 95 | Gladys Power | 28 | Wife | — | Kansas |
| 96 | Frank Power | 8 | Son | — | Kansas |
| 97 | Robert Power | 6 | Son | — | Kansas |
| 98 | William Power | 2 | Son | — | Kansas |
| 99 | Walter Williams | 21 | Head | — | Texas |
| 100 | Hazel Williams | 18 | Wife | Saleswoman | Kansas |
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)