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William Lund — 1930 US Census Record
Linked across censuses1930 United States Federal Census · San Francisco, California
Our Model Tree links this William Lund across the 1930 and 1940 US Censuses in San Francisco, California (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 27-person household.
Age 1
b. ~1929
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Lund |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Sweden |
| Mother's Birthplace | California |
| Additional Details | |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | San 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.
27 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Mary Lund | Spouse | — | 31 | ~1899 |
| William Lund | Son | — | 1 | ~1929 |
| Carl Lund | Son | — | 8 | ~1922 |
| Richard Lund | Son | — | ~1930 | |
| John Lund | Son | — | 4 | ~1926 |
| Joseph Lund | Son | — | 2 | ~1928 |
| Arthur Lund | Son | — | 13 | ~1917 |
| Henry Lund | Son | — | 18 | ~1912 |
| Walter Lund | Son | — | 11 | ~1919 |
| George Lund | Son | — | 22 | ~1908 |
| Alice Lund | Daughter | — | ~1930 | |
| Rose Lund | Daughter | — | ~1930 | |
| Carl Lund | Head | — | 36 | ~1894 |
| Helen Lund | Daughter | — | ~1930 | |
| Charles Lund | Son | — | 6 | ~1924 |
| James Lund | Son | — | 8 | ~1922 |
| Fred Lund | Son | — | 16 | ~1914 |
| Thomas Lund | Son | — | 1 | ~1929 |
| Frank Lund | Son | — | 4 | ~1926 |
| Mary Lund | Daughter | — | 6 | ~1924 |
| Edward Lund | Son | — | 10 | ~1920 |
| Grace Lund | Daughter | — | ~1930 | |
| Mary Lund | Daughter | — | ~1930 | |
| Robert Lund | Son | — | 2 | ~1928 |
| Martha Lund | Daughter | — | ~1930 | |
| Anna Lund | Daughter | — | ~1930 | |
| Ruth Lund | Daughter | — | ~1930 |
Census Appearances
1930
San Francisco, …
Son, age 1
San Francisco, California · implied b. ~1929 — 27 household members
| Surname | Lund |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Sweden |
| Mother's Birthplace | California |
| 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 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lord |
| Given Name | William |
| 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 7 |
| 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.
Our Model Tree links William Lund across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Lund
Son · 1930 · age 1 · b. ~1929 · California
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Sibling
Fred Lund
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Lund
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Lund
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Lund
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Lund
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Lund
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martha Lund
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Lund
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Lund
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Lund
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Lund
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Lund
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Lund
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Lund
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Lund
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Lund
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Lund
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Lund
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Lund
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Lund
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Lund
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Grace Lund
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Lund
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Lund
Sibling · 1930 · age 2
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 — San Francisco, California
Open full size
1930 US Federal Census — San Francisco, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel209:1009)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Carl Lund | 36 | Head | Master Mariner | Sweden |
| 2 | Mary Lund | 31 | Wife | Mariner | Germany |
| 3 | Carl Jr. Lund | 8 | Son | — | Maine |
| 4 | Mary Lund | 6 | Daughter | — | Virginia |
| 5 | John Lund | 4 | Son | — | California |
| 6 | Robert Lund | 2 | Son | — | California |
| 7 | William Lund THIS PERSON | 1 | Son | — | California |
| 8 | George Lund | 22 | Son | Radio Operator | Germany |
| 9 | Henry Lund | 18 | Son | — | Germany |
| 10 | Fred Lund | 16 | Son | — | Alaska |
| 11 | Arthur Lund | 13 | Son | — | Texas |
| 12 | Walter Lund | 11 | Son | — | California |
| 13 | Edward Lund | 10 | Son | — | California |
| 14 | James Lund | 8 | Son | — | California |
| 15 | Charles Lund | 6 | Son | — | California |
| 16 | Frank Lund | 4 | Son | — | California |
| 17 | Joseph Lund | 2 | Son | — | California |
| 18 | Thomas Lund | 1 | Son | — | California |
| 19 | Richard Lund | 0 | Son | — | California |
| 20 | Mary Lund | 0 | Daughter | — | California |
| 21 | Alice Lund | 0 | Daughter | — | California |
| 22 | Helen Lund | 0 | Daughter | — | California |
| 23 | Ruth Lund | 0 | Daughter | — | California |
| 24 | Grace Lund | 0 | Daughter | — | California |
| 25 | Rose Lund | 0 | Daughter | — | California |
| 26 | Anna Lund | 0 | Daughter | — | California |
| 27 | Martha Lund | 0 | Daughter | — | California |
| 28 | — | None | — | — | — |
| 29 | — | None | — | — | — |
| 30 | — | None | — | — | — |
| 31 | — | None | — | — | — |
| 32 | — | None | — | — | — |
| 33 | — | None | — | — | — |
| 34 | — | None | — | — | — |
| 35 | — | None | — | — | — |
| 36 | — | None | — | — | — |
| 37 | — | None | — | — | — |
| 38 | — | None | — | — | — |
| 39 | — | None | — | — | — |
| 40 | — | None | — | — | — |
| 41 | — | None | — | — | — |
| 42 | — | None | — | — | — |
| 43 | — | None | — | — | — |
| 44 | — | None | — | — | — |
| 45 | — | None | — | — | — |
| 46 | — | None | — | — | — |
| 47 | — | None | — | — | — |
| 48 | — | None | — | — | — |
| 49 | — | None | — | — | — |
| 50 | — | None | — | — | — |
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)