MP
Margaret Porter — 1940 US Census Record
Linked across censuses1940 United States Federal Census · King-County, Washington
Our Model Tree links this Margaret Porter across the 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 7-person household.
Age 15
b. ~1925
Female
Daughter
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Porter |
| Given Name | Margaret L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Johnson Precinct |
| 1935 Residence (County) | King |
| Additional Details | |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Township / Ward | Johnson Precinct |
| Est. Birth Year | ~1925 |
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 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Lucy Porter | Other | — | 46 | ~1894 |
| Mary Wise | Spouse | — | 68 | ~1872 |
| Richard Porter | Son | — | 10 | ~1930 |
| Margaret Porter | Daughter | — | 15 | ~1925 |
| Mary Porter | Daughter | — | 19 | ~1921 |
| Lewis Wise | Head | — | 75 | ~1865 |
| Calverne Porter | Daughter | — | 49 | ~1891 |
Census Appearances
1930
King, Washington
Daughter, age 5
King, Washington · implied b. ~1925 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Porter |
| Given Name | Margaret L |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | California |
| Mother's Birthplace | Colorado |
| Occupation | none |
| Can Read/Write | No |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Daughter, age 15
King-County, Washington · implied b. ~1925 — 7 household members
| Surname | Porter |
| Given Name | Margaret L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Johnson Precinct |
| 1935 Residence (County) | King |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
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 Margaret Porter across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Porter
Daughter · 1940 · age 15 · b. ~1925 · Washington
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Sibling
Richard Porter
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Porter
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Calverne Porter
Sibling · 1940 · age 49
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 — King-County, Washington
Open full size
1940 US Federal Census — King-County, Washington
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-04344-00758)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elizabeth M Van Pelt | 39 | Wife | — | Nebraska |
| 42 | Rollo W Jr Van Pelt | 10 | Son | — | Illinois |
| 43 | Charles M Van Pelt | 9 | Son | — | Missouri |
| 44 | Edward B Van Pelt | 7 | Son | — | Nebraska |
| 45 | Richard W Van Pelt | 5 | Son | — | Washington |
| 46 | Ward G Settersten | 31 | Head | Packing Foreman | Wisconsin |
| 47 | Dorothy M Settersten | 27 | Wife | — | Washington |
| 48 | Lewis Waller Wise | 75 | Head | Meat Cutter | Indiana |
| 49 | Mary W Wise | 68 | Wife | — | Illinois |
| 50 | Lucy Porter | 46 | Lodger | — | Colorado |
| 51 | Calverne M Porter | 49 | Daughter | Salesman | California |
| 52 | Mary L Porter | 19 | Daughter | Clerk | Washington |
| 53 | Margaret L Porter THIS PERSON | 15 | Daughter | — | Washington |
| 54 | Richard A Porter | 10 | Son | — | Washington |
| 55 | Edwin H Jr Snyder | 36 | Head | Mechanic | Montana |
| 56 | Donalda Snyder | 33 | Wife | Secretary Work | Canada Eng |
| 57 | Edwin H Jr Snyder | 17 | Son | — | Montana |
| 58 | Virginia May Snyder | 5 | Daughter | — | Washington |
| 59 | Homer S Smith | 40 | Head | Insurance Salesman | Washington |
| 60 | Beatrice Smith | 39 | Wife | — | Washington |
| 61 | Homer S Jr Smith | 13 | Son | — | Washington |
| 62 | Al A Nelson | 47 | Head | Contractor | Iowa |
| 63 | Grace Nelson | 45 | Wife | — | Illinois |
| 64 | Alfred Nelson | 10 | Son | — | Washington |
| 65 | Margaret Nelson | 8 | Daughter | — | Washington |
| 66 | Arthur Anderson | 51 | Head | Contractor | Minnesota |
| 67 | Gladys Anderson | 44 | Daughter | Storekeeper | Illinois |
| 68 | Gloria Anderson | 17 | Niece | — | Washington |
| 69 | Arthur Anderson | 10 | Nephew | — | Washington |
| 70 | Thomas H Arnold | 36 | Head | Manager | Missouri |
| 71 | Gertrude L Arnold | 31 | Wife | — | Ohio |
| 72 | Earl Mccomb | 51 | Head | Boys Advisor | Texas |
| 73 | Florence Mccomb | 44 | Wife | — | Texas |
| 74 | Ellen Mccomb | 23 | Daughter | — | Texas |
| 75 | Betty Mccomb | 21 | Daughter | — | Washington |
| 76 | William John Siemens | 52 | Head | Physician & Surgeon | So Dakota |
| 77 | Gertrude M Siemens | 45 | Wife | — | Iowa |
| 78 | Elizabeth B Siemens | 17 | Daughter | — | Canada Eng |
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)