MJ
Martha Jones — 1940 US Census Record
Linked across censuses1940 United States Federal Census · King-County, Washington
Our Model Tree links this Martha Jones across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed) — first a spouse (b.~1883), then head of a 3-person household.
Age 57
b. ~1883
Female
Spouse
Born: Wales
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Jones |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Wales |
| 1935 Residence (City) | Kent |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Washington |
| Birth Country | Wales |
| Birthplace (normalized) | wales |
| Township / Ward | Seattle 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martha | Age | Birth yr |
|---|---|---|---|---|
| Eleanor Jones | Daughter | — | 23 | ~1917 |
| W Jones | Head | — | 52 | ~1888 |
| Martha Jones | Spouse | — | 57 | ~1883 |
Census Appearances
1920
King, Washington
Spouse, age 35
King, Washington · implied b. ~1885 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Wales |
| Year of Immigration | 1909 |
| Naturalization Status | Alien |
| Father's Birthplace | Wales |
| Mother's Birthplace | Wales |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Welsh |
| Birth Country | Wales |
| Birthplace (normalized) | wales |
1930
King, Washington
Spouse, age 45
King, Washington · implied b. ~1885 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Wales |
| Naturalization Status | Naturalized |
| Year of Immigration | 1908 |
| Age at First Marriage | 26 |
| Father's Birthplace | Wales |
| Mother's Birthplace | Wales |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Veteran | No |
| Birth Country | Wales |
| Birthplace (normalized) | wales |
1940
King-County, Washington
Spouse, age 57
King-County, Washington · implied b. ~1883 — 3 household members
| Surname | Jones |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Wales |
| 1935 Residence (City) | Kent |
| Naturalization Status | Naturalized |
| Highest Grade | 8 |
| 1935 Residence | Washington |
| Birth Country | Wales |
| Birthplace (normalized) | wales |
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 Martha Jones across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Martha Jones
Spouse · 1940 · age 57 · b. ~1883 · Washington
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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
40 people indexed on this census page (nara:1940:m-t0627-04375-00780)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Eva C Cort | 77 | Wife | — | Oregon |
| 42 | Chas Webley | 80 | Brother-in-law | Musician | Illinois |
| 43 | George Everett | 47 | Head | Electrician | Washington |
| 44 | Matilda Everett | 52 | Wife | — | Minnesota |
| 45 | Dorothy Everett | 30 | Daughter | — | Washington |
| 46 | Judas Crane | 19 | Nephew | New Worker | Washington |
| 47 | Edward J Schlegal | 44 | Head | Meat Salesman | France |
| 48 | Louise Schlegal | 57 | Wife | — | Massachusetts |
| 49 | Pierce Murphy | 55 | Head | Real Estate Salesman | Kentucky |
| 50 | Ruby Murphy | 47 | Wife | — | California |
| 51 | Bill Murphy | 21 | Son | Laborer | Washington |
| 52 | Josephine Murphy | 19 | Daughter | Sales Clerk | Washington |
| 53 | Patricia Murphy | 18 | Daughter | — | Washington |
| 54 | Patrick Murphy | 15 | Son | — | Washington |
| 55 | Jack Murphy | 13 | Son | — | Washington |
| 56 | Ruby Murphy | 11 | Daughter | — | Washington |
| 57 | Jerry Murphy | 5 | Son | — | Washington |
| 58 | Charley Murphy | 2 | Son | — | Washington |
| 59 | Danny Murphy | 0 | Son | — | Washington |
| 60 | Jack P Robertson | 50 | Head | Fireman | Virginia |
| 61 | Melene Robertson | 38 | Wife | — | Washington |
| 62 | Jack Weber | 17 | Son | — | Washington |
| 63 | Lucile Weber | 15 | Daughter | — | Washington |
| 64 | Frederick Curt | 70 | Head | Janitor | England |
| 65 | Elizabeth Curt | 61 | Wife | — | England |
| 66 | Myron Curt | 26 | Son | Cabinet Maker | Washington |
| 67 | Helen O'Harris | 32 | Head | — | N. Dakota |
| 68 | Richard Brown | 13 | Son | — | Washington |
| 69 | Robert O'Harris | 5 | Son | — | Washington |
| 70 | Paul C Rankin | 47 | Head | Manager | S. Dakota |
| 71 | Marie Rankin | 46 | Wife | — | Iowa |
| 72 | Paul Rankin | 19 | Son | Clerk | Washington |
| 73 | C. L. Hopper | 57 | Head | Dentist | Kansas |
| 74 | Ethel Hopper | 56 | Wife | — | Washington |
| 75 | Leon Hopper | 12 | Son | — | Washington |
| 76 | Ronald Hopper | 10 | Son | — | Washington |
| 77 | Gloria Hopper | 8 | Daughter | — | Washington |
| 78 | W. R. Jones | 52 | Head | Longshoreman | Wales |
| 79 | Martha Jones THIS PERSON | 57 | Wife | — | Wales |
| 80 | Eleanor Jones | 23 | Daughter | Packer | Idaho |
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)