ML
Mary Lund — 1930 US Census Record
Linked across censuses1930 United States Federal Census · San Francisco, California
Our Model Tree links this Mary Lund across the 1930 and 1940 US Censuses in San Francisco, California (XGBoost, ~Confirmed) — first a spouse (b.~1889), then head of a 6-person household.
Age 41
b. ~1889
Female
Spouse
Born: Germany
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Lund |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Germany |
| Year of Immigration | 1913 |
| Age at First Marriage | 21 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Additional Details | |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
| Township / Ward | San Francisco City |
| Est. Birth Year | ~1889 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Lund | Daughter | — | 11 | ~1919 |
| Hans Lund | Son | — | 13 | ~1917 |
| George Lund | Son | — | 8 | ~1922 |
| Hans Lund | Head | — | 42 | ~1888 |
| Fred Lund | Son | — | 10 | ~1920 |
| Mary Lund | Spouse | — | 41 | ~1889 |
Census Appearances
1930
San Francisco, …
Spouse, age 41
San Francisco, California · implied b. ~1889 — 6 household members
| Surname | Lund |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Germany |
| Year of Immigration | 1913 |
| Age at First Marriage | 21 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
1940
San-Francisco-County, California
Spouse, age 51
San-Francisco-County, California · implied b. ~1889 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Land |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Germany |
| 1935 Residence (City) | San Francisco city |
| 1935 Residence (County) | San Francisco |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth Country | Germany |
| Birthplace (normalized) | germany |
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 Mary Lund across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Lund
Spouse · 1930 · age 41 · b. ~1889 · California
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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:californiacensus00reel199:0973)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Margaret | 51 | Head | — | California |
| 52 | Helen | 31 | Daughter | — | Connecticut |
| 53 | Ruth | 15 | Daughter | — | California |
| 54 | Eugene Greene | 52 | Head | Salesman | California |
| 55 | Ida Greene | 52 | Wife | — | California |
| 56 | C. Mccormick | 62 | Head | Retired | California |
| 57 | Eva L. Mccormick | 61 | Wife | — | New York |
| 58 | Hans Lund | 42 | Head | Amusement | England |
| 59 | Mary Lund THIS PERSON | 41 | Wife | — | Germany |
| 60 | Hans Lund | 13 | Son | — | California |
| 61 | Mary Lund | 11 | Daughter | — | California |
| 62 | Fred Lund | 10 | Son | — | California |
| 63 | George Lund | 8 | Son | — | California |
| 64 | Hans Knudsen | 42 | Head | Carpenter | Denmark |
| 65 | Dagmar Knudsen | 37 | Wife | — | Denmark |
| 66 | Dorothy Knudsen | 16 | Daughter | — | Michigan |
| 67 | Hans Knudsen | 11 | Son | — | California |
| 68 | Robert Knudsen | 2 | Son | — | California |
| 69 | Fred Hansen | 52 | Head | Carpenter | Denmark |
| 70 | Anna Hansen | 51 | Wife | — | Denmark |
| 71 | Fred Hansen | 21 | Son | Clerk | Canada |
| 72 | Ruth Hansen | 18 | Daughter | Stenographer | California |
| 73 | Alice Hansen | 13 | Daughter | — | California |
| 74 | Anna Hansen | 11 | Daughter | — | California |
| 75 | Freda Hansen | 9 | Daughter | — | California |
| 76 | Leo Hansen | 27 | Head | Clerk | California |
| 77 | Mary Hansen | 22 | Wife | — | California |
| 78 | Richard Hansen | 3 | Son | — | California |
| 79 | Emily Hansen | 51 | Head | — | California |
| 80 | Paul Hansen | 22 | Son | — | California |
| 81 | Evelyn Hansen | 23 | Daughter | — | California |
| 82 | Fred Hansen | 42 | Head | Salesman | California |
| 83 | Adeline Hansen | 41 | Wife | — | California |
| 84 | Lucille Hansen | 13 | Daughter | — | California |
| 85 | Grant Hansen | 34 | Head | Salesman | United States |
| 86 | Robert Hansen | 31 | Brother | Clerk | United States |
| 87 | James Hansen | 43 | Head | Producer | California |
| 88 | Ida Hansen | 42 | Wife | — | California |
| 89 | James Hansen | 13 | Son | — | California |
| 90 | Fred Hansen | 44 | Head | Salesman | California |
| 91 | Mary Hansen | 44 | Wife | — | Nevada |
| 92 | Mary Hansen | 17 | Daughter | — | California |
| 93 | Victor Hansen | 36 | Head | Electrician | California |
| 94 | Madeline Hansen | 34 | Wife | — | California |
| 95 | Victor Hansen | 13 | Son | — | California |
| 96 | William Hansen | 12 | Son | — | California |
| 97 | Eugene Hansen | 46 | Head | — | New York |
| 98 | Laura Hansen | 15 | Daughter | — | California |
| 99 | Madeline Hansen | 13 | Daughter | — | California |
| 100 | Louis Hansen | 32 | Head | Proprietor | Massachusetts |
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)