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James Peterson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · San-Francisco-County, California

Our Model Tree links this James Peterson across the 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 8-person household.

Age 11 b. ~1929 Male Son Born: California Single

1940 Census Record Details

Census Year1940
LocationSan-Francisco-County, California
SurnamePeterson
Given NameJames H.
Relationship to HeadSon
SexM
Color / RaceWhite
Age11
Marital StatusSingle
BirthplaceCalifornia
1935 Residence (City)San Francisco
1935 Residence (County)San Francisco
Additional Details
Highest GradeNo 5
1935 ResidenceSame place
Birth StateCalifornia
Birth CountryUnited States
Birthplace (normalized)california
Township / WardSan Francisco
Est. Birth Year~1929

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.

8 people recorded at the same address in the 1940 census.

Name Relation to head Relative to James Age Birth yr
Vila Peterson Daughter — 16 ~1924
E Peterson Daughter — 9 ~1931
N Peterson Head — 51 ~1889
J Peterson Son — 8 ~1932
James Peterson Son — 11 ~1929
Raymond Peterson Son — 21 ~1919
N Peterson Son — 12 ~1928
A Peterson Spouse — 41 ~1899

Census Appearances

1930
San Francisco, …
Son, age 1
San Francisco, California · implied b. ~1929 — 6 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Peterson
Given Name James H
Relationship to Head Son
Sex M
Color / Race White
Age 1
Marital Status Single
Birthplace California
Father's Birthplace Sweden
Mother's Birthplace New York
Birth State California
Birth Country United States
Birthplace (normalized) california
1940
San-Francisco-County, California
Son, age 11
San-Francisco-County, California · implied b. ~1929 — 8 household members
Surname Peterson
Given Name James H.
Relationship to Head Son
Sex M
Color / Race White
Age 11
Marital Status Single
Birthplace California
1935 Residence (City) San Francisco
1935 Residence (County) San Francisco
Highest Grade No 5
1935 Residence Same place
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.
Linked across censuses
Our Model Tree links James Peterson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Peterson
Son · 1940 · age 11 · b. ~1929 · California
★ You are viewing this record
Sibling
J Peterson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vila Peterson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
N Peterson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
E Peterson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Peterson
Sibling · 1940 · age 21
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 — San-Francisco-County, California Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-00310-00022)

Line Name Age Relation Occupation Birthplace
1 N. C. Peterson 51 Head Mechanic Sweden
2 A. C. Peterson 41 Wife — New York
3 Raymond Peterson 21 Son — New York
4 Vila G. Peterson 16 Daughter — California
5 N. C. Peterson 12 Son — California
6 James H. Peterson THIS PERSON 11 Son — California
7 E. M. Peterson 9 Daughter — California
8 J. H. Peterson 8 Son — California
9 Clifford Stowie 46 Head Salesman Washington
10 Bernice Stowie 29 Wife Sales Clerk Washington
11 — None — — —
12 Samuel C. Enzend 34 Head Policeman New York
13 Bernice Enzend 21 Wife — California
14 — None — — —
15 Peter Lopez 37 Head — Texas
16 Virginia Lopez 21 Wife — California
17 Carol Lopez 2 Daughter — California
18 Steven Spellman 46 Head — Iowa
19 Anne Spellman 42 Wife — Iowa
20 Steven Jr. Spellman 14 Son — California
21 John Spellman 13 Son — California
22 Marie Spellman 7 Daughter — California
23 Edward Accenio 7 Boarder — California
24 Helen Mrs. Get 42 Head Bookkeeper New York
25 E. A. James 38 Head Electrician Wales
26 Esther James 29 Wife — Germany
27 Karen James 5 Daughter — California
28 Lenore James 3 Daughter — California
29 Robert James None Son — California
30 T. M. Larkin 41 Head Laborer Pennsylvania
31 Margaret Larkin 39 Wife — Illinois
32 — 36 Head Electrician California
33 — 38 Wife — California
34 — 15 Son — California
35 — 13 Son — California
36 — 34 Head Clerk California
37 — 34 Wife — California
38 — 1 Daughter — California
39 — 35 Head — Germany
40 — 27 Wife — Alabama

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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)

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