MJ
Margaret James — 1940 US Census Record
Linked across censuses1940 United States Federal Census · San-Luis-Obispo-County, California
Our Model Tree links this Margaret James across the 1930 and 1940 US Censuses in San-Luis-Obispo-County, California (XGBoost, ~Confirmed) — first a spouse (b.~1893), then head of a 7-person household.
Age 47
b. ~1893
Female
Spouse
Born: New Mexico
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Luis-Obispo-County, California |
| Surname | James |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | New Mexico |
| 1935 Residence (City) | San Luis Obispo |
| 1935 Residence (County) | San Luis Obispo |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth State | New Mexico |
| Birth Country | United States |
| Birthplace (normalized) | new mexico |
| Township / Ward | San Luis Obispo |
| Est. Birth Year | ~1893 |
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 |
|---|---|---|---|---|
| Billy James | Son | — | 16 | ~1924 |
| Margaret James | Spouse | — | 47 | ~1893 |
| George James | Son | — | 27 | ~1913 |
| Samuel James | Head | — | 58 | ~1882 |
| Arnel James | Son | — | 11 | ~1929 |
| Charlotte James | Daughter | — | 26 | ~1914 |
| Joan James | Other | — | ~1940 |
Census Appearances
1930
San Luis …
Other, age 38
San Luis Obispo, California · implied b. ~1892 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | James |
| Given Name | Margaret |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | New Mexico |
| Age at First Marriage | 15 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | England |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | New Mexico |
| Birth Country | United States |
| Birthplace (normalized) | new mexico |
1940
San-Luis-Obispo-County, California
Spouse, age 47
San-Luis-Obispo-County, California · implied b. ~1893 — 7 household members
| Surname | James |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | New Mexico |
| 1935 Residence (City) | San Luis Obispo |
| 1935 Residence (County) | San Luis Obispo |
| Income (1939) | 0 |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth State | New Mexico |
| Birth Country | United States |
| Birthplace (normalized) | new mexico |
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 James across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret James
Spouse · 1940 · age 47 · b. ~1893 · California
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — San-Luis-Obispo-County, California
Open full size
1940 US Federal Census — San-Luis-Obispo-County, California
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00328-00835)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ruvina Botini | 29 | Daughter | Stenographer | Italy |
| 2 | Maria Botini | 20 | Daughter | — | California |
| 3 | Virginia Botini | 18 | Daughter | — | California |
| 4 | Johnie Botini | 14 | Son | — | California |
| 5 | Samuel A James | 58 | Head | Farmer | Tennessee |
| 6 | Margaret James THIS PERSON | 47 | Wife | — | New Mexico |
| 7 | George H James | 27 | Son | Carpainter | Arizona |
| 8 | Billy James | 16 | Son | — | California |
| 9 | Arnel James | 11 | Son | — | California |
| 10 | Charlotte James | 26 | Daughter | — | N. Dakota |
| 11 | Joan James | 0 | Grand daughter | — | California |
| 12 | Clifton Hunsaker | 27 | Head | Truck Driver | California |
| 13 | Winifred Hunsaker | 27 | Wife | — | Indiana |
| 14 | Donna Hunsaker | 2 | Daughter | — | California |
| 15 | Extra Line | None | — | — | — |
| 16 | Extra Line | None | — | — | — |
| 17 | Extra Line | None | — | — | — |
| 18 | Ben Bonetti | 45 | Head | Trucking Business | California |
| 19 | Carmen Bonetti | 36 | Wife | — | California |
| 20 | Bobbie R Bonetti | 11 | Son | — | California |
| 21 | Billie E Bonetti | 9 | Son | — | California |
| 22 | Carmen Mendoza | 69 | Mother in law | — | California |
| 23 | Harold J Fredriksen | 40 | Head | Beekeeper | Oregon |
| 24 | Leola Fredriksen | 36 | Wife | — | California |
| 25 | Robert A Fredriksen | 14 | Son | — | California |
| 26 | Richard M Fredriksen | 10 | Son | — | California |
| 27 | Marko Mirko | 42 | Head | Yard Clerk | Jugo Slavia |
| 28 | Frances Mirko | 41 | Wife | — | Jugo Slavia |
| 29 | Mathew Mirko | 1 | Son | — | California |
| 30 | Clarence Hall | 35 | Head | Blacksmith | N. Dakota |
| 31 | Elizabeth Hall | 27 | Wife | — | New York |
| 32 | Vera Hall | 7 | Daughter | — | California |
| 33 | Doris Hall | 2 | Daughter | — | California |
| 34 | Betty Hall | 0 | Daughter | — | California |
| 35 | Seth Kinney | 39 | Head | Electrician | California |
| 36 | Thel Kinney | 35 | Wife | — | Washington |
| 37 | Kay Kinney | 8 | Daughter | — | California |
| 38 | Carol Kinney | 6 | Daughter | — | California |
| 39 | Geraldine Kinney | 0 | Daughter | — | California |
Related Census Records
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)