MS
Mary Swanson — 1920 US Census Record
Model Tree available1920 United States Federal Census · Alameda, California
Our Model Tree links this Mary Swanson across the 1920, 1930 and 1940 US Censuses in Alameda, California (XGBoost, ~Confirmed), with identified parents John & John — first a daughter (b.~1918), then head of a 4-person household.
Age 2
b. ~1918
Female
Daughter
Born: California
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Alameda, California |
| Surname | Swanson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Additional Details | |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | City Of Oakland |
| Est. Birth Year | ~1918 |
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.
4 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Swanson | Daughter | — | 2 | ~1918 |
| John Swanson | Head | — | 31 | ~1889 |
| Anna Swanson | Spouse | — | 27 | ~1893 |
| Elbert Swanson | Son | — | 4 | ~1916 |
Census Appearances
1920
Alameda, California
Daughter, age 2
Alameda, California · implied b. ~1918 — 4 household members
| Surname | Swanson |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Alameda, California
Daughter, age 12
Alameda, California · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Swanson |
| Given Name | May |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Alameda-County, California
Daughter, age 22
Alameda-County, California · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Swanson |
| Given Name | May F |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Oakland city |
| 1935 Residence (County) | Alameda |
| Occupation | Duplicating mach operator |
| Industry | Retail mail order house |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 978 |
| Highest Grade | H 4 |
| 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 Mary Swanson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Swanson (~0.92 confidence) and father John Swanson (~0.92 confidence) and mother Anna Swanson (~0.92 confidence) and mother Anna Swanson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Swanson
b. ~1889
Source father
● Household
· direct · ~0.92
Father
John Swanson
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Anna Swanson
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Anna Swanson
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Swanson
Daughter · 1920 · age 2 · b. ~1918 · California
★ You are viewing this record
Sibling
Elbert Swanson
Sibling · 1920 · age 4
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
1920 US Federal Census — Alameda, California
Open full size
1920 US Federal Census — Alameda, California
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu091unit:0009)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Josephine | 39 | Wife | — | California |
| 52 | Gertrude | 10 | Daughter | — | California |
| 53 | Albert | 7 | Son | — | California |
| 54 | George P. Allevit | 66 | Head | — | Delaware |
| 55 | Laura A. Allevit | 49 | Wife | — | Iowa |
| 56 | August Deigh | 46 | Head | Metal Polisher | Germany |
| 57 | Katherine Deigh | 43 | Wife | — | New York |
| 58 | Edward Deigh | 15 | Son | — | California |
| 59 | August Deigh | 13 | Son | — | California |
| 60 | Joseph Deigh | 11 | Son | — | California |
| 61 | George Deigh | 9 | Son | — | California |
| 62 | Charles A. Hansen | 64 | Boarder | — | Iowa |
| 63 | James G. Skaggs | 39 | Head | Mechanic | Missouri |
| 64 | May J. Skaggs | 37 | Wife | — | California |
| 65 | George J. Honda | 56 | Head | — | Wisconsin |
| 66 | Lola Honda | 36 | Wife | — | Ohio |
| 67 | Thomas H. Joyce | 48 | Head | Fireman Dept. | California |
| 68 | Katherine Joyce | 44 | Wife | — | California |
| 69 | Sarah Christopher Joyce | 36 | Cousin | Nurse | California |
| 70 | Marquis Hixon | 61 | Head | Teamster | Missouri |
| 71 | Ora Hixon | 57 | Wife | — | Ohio |
| 72 | Lawrence William Hixon | 41 | Nephew | Laborer | Michigan |
| 73 | Fred Marquess | 45 | Head | Laborer | California |
| 74 | May Marquess | 36 | Wife | — | California |
| 75 | Francis Marquess | 16 | Son | Baker Helper | California |
| 76 | Madeline Marquess | 15 | Daughter | — | California |
| 77 | Harold Marquess | 12 | Son | — | California |
| 78 | Melvine Marquess | 4 | Son | — | California |
| 79 | Baby Marquess | 0 | Son | — | California |
| 80 | Kurt Hartnacke | 61 | Head | Agent | Prussia |
| 81 | Angelina Hartnacke | 57 | Sister | — | Prussia |
| 82 | Antone Munnich | 70 | Head | Hardener | Carniola |
| 83 | John Swanson | 31 | Head | Machinist | Sweden |
| 84 | Anna Swanson | 27 | Wife | — | Sweden |
| 85 | Elbert E. Swanson | 4 | Son | — | Canada |
| 86 | Mary Swanson THIS PERSON | 2 | Daughter | — | California |
| 87 | James H. Anderson | 58 | Head | Blacksmith | Missouri |
| 88 | Susan Anderson | 58 | Wife | — | Massachusetts |
| 89 | Gordon J. Anderson | 18 | Son | Sheet Metal | Missouri |
| 90 | Alfred J. Pereman | 49 | Head | Clerk | California |
| 91 | Carrie M. Pereman | 36 | Wife | — | Indiana |
| 92 | Ella Ebeling | 37 | Head | Keeper Of | Indiana |
| 93 | Elsie Ebeling | 14 | Daughter | — | California |
| 94 | Ethel Ebeling | 13 | Daughter | — | California |
| 95 | Robert Ebeling | 10 | Son | — | California |
| 96 | Frank W. Heppelman | 31 | Head | Engineer | California |
| 97 | Anna M. Heppelman | 34 | Wife | — | Wurttemberg |
| 98 | Hugh Donahue | 55 | Head | Blacksmith | Scotland |
| 99 | John N. Donahue | 21 | Son | Electrician | California |
| 100 | Leonnette Donahue | 19 | Son | Office Clerk | California |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)