MW
Mary Walsh — 1920 US Census Record
Model Tree available1920 United States Federal Census · San Francisco, California
Our Model Tree links this Mary Walsh across the 1900, 1910 and 1920 US Censuses in San Francisco, California (XGBoost, ~Confirmed), with identified parents John & Thomas — first a daughter (b.~1895), then head of a 8-person household.
Age 25
b. ~1895
Female
Daughter
Born: California
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | San Francisco, California |
| Surname | Walsh |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Teacher |
| Township / Ward | San Francisco City |
| Est. Birth Year | ~1895 |
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 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Nellie Walsh | Daughter | — | 21 | ~1899 |
| Mary Walsh | Daughter | — | 25 | ~1895 |
| Kathleen Walsh | Daughter | — | 12 | ~1908 |
| John Walsh | Head | — | 52 | ~1868 |
| Robert Walsh | Son | — | 18 | ~1902 |
| Edward Walsh | Son | — | 23 | ~1897 |
| William Walsh | Son | — | 15 | ~1905 |
| Walter Walsh | Son | — | 27 | ~1893 |
Census Appearances
1900
San Francisco, …
Daughter, age 7
San Francisco, California · implied b. ~1893 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walsh |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | California |
| Birth Month | Oct |
| Birth Year | 1893 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1910
San Francisco, …
Daughter, age 16
San Francisco, California · implied b. ~1894 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Walsh |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1920
San Francisco, …
Daughter, age 25
San Francisco, California · implied b. ~1895 — 8 household members
| Surname | Walsh |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| 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 Walsh across 3 US Census years (1900, 1910 and 1920) in San Francisco, California, using XGBoost record linkage. Identified parents: father John Walsh (~0.92 confidence) and father Thomas Walsh (~0.92 confidence) and father Edward Walsh (~0.92 confidence) and mother Mary Walsh (~0.92 confidence) and mother Ellen Walsh (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Walsh
b. ~1868
Source father
● Household
· direct · ~0.92
Father
Thomas Walsh
b. ~1860
Source father
● Household
· direct · ~0.92
Father
Edward Walsh
b. ~1857
Source father
● Household
· direct · ~0.92
Mother
Mary Walsh
b. ~1865
Source mother
● Household
· direct · ~0.92
Mother
Ellen Walsh
b. ~1867
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Walsh
Daughter · 1920 · age 25 · b. ~1895 · California
★ You are viewing this record
Sibling
Walter Walsh
Sibling · 1920 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Walsh
Sibling · 1920 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nellie Walsh
Sibling · 1920 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Walsh
Sibling · 1920 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Walsh
Sibling · 1920 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Walsh
Sibling · 1920 · age 12
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 — San Francisco, California
Open full size
1920 US Federal Census — San Francisco, California
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu141unit:1064)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gilbert Hansen | 27 | Head | Chauffeur | California |
| 2 | Augusta Hansen | 24 | Wife | — | California |
| 3 | Albert Hansen | 2 | Son | — | California |
| 4 | Thomas Gretchen | 31 | Head | Mechanic | Illinois |
| 5 | Edna Gretchen | 24 | Wife | — | California |
| 6 | James P. Hansen | 74 | Head | — | Denmark |
| 7 | William G. Davenport | 19 | Boarder | Clerk | California |
| 8 | Patrick Byrne | 62 | Head | Laborer | Ireland |
| 9 | Adam G. Beall | 36 | Head | Conductor | Pennsylvania |
| 10 | Lillie Beall | 36 | Wife | — | California |
| 11 | Walter Beall | 8 | Son | — | California |
| 12 | Ruth Beall | 5 | Daughter | — | California |
| 13 | Andrew Thorsen | 42 | Head | Cabinet Maker | Norway |
| 14 | Gertrude Thorsen | 49 | Wife | — | Norway |
| 15 | Oscar Thorsen | 14 | Son | — | California |
| 16 | Marie Thorsen | 12 | Daughter | — | California |
| 17 | Hugo S. Swenson | 34 | Head | Cabinet Maker | Sweden |
| 18 | Josephine Swenson | 42 | Wife | — | Norway |
| 19 | John Walsh | 52 | Head | — | Ireland |
| 20 | Walter Walsh | 27 | Son | Salesman | California |
| 21 | Mary Walsh THIS PERSON | 25 | Daughter | Teacher | California |
| 22 | Edward Walsh | 23 | Son | Driver | California |
| 23 | Nellie Walsh | 21 | Daughter | Teacher | California |
| 24 | Robert Walsh | 18 | Son | Clerk | California |
| 25 | William Walsh | 15 | Son | — | California |
| 26 | Kathleen Walsh | 12 | Daughter | — | California |
| 27 | Pete Ferraro | 37 | Head | Prop | Italy |
| 28 | Louise Ferraro | 35 | Wife | — | Italy |
| 29 | Marie Ferraro | 8 | Son | — | California |
| 30 | Alfred Ferraro | 7 | Son | — | California |
| 31 | Theresa Ferraro | 5 | Daughter | — | California |
| 32 | John Cappa | 31 | Brother in law | Passenger | Italy |
| 33 | William Runnels | 22 | Head | Conductor | Oregon |
| 34 | Ruth Runnels | 22 | Wife | — | California |
| 35 | David Gustafson | 57 | Head | Carpenter | Norway |
| 36 | Christina Gustafson | 52 | Wife | — | Norway |
| 37 | Hulda Gustafson | 19 | Daughter | Stenographer | California |
| 38 | Martha Gustafson | 16 | Daughter | — | California |
| 39 | Robert Wilson | 20 | Boarder | Laborer | California |
| 40 | Elizabeth Regan | 55 | Head | — | Ireland |
| 41 | Mary E. Regan | 28 | Daughter | Stenographer | California |
| 42 | Richard J. Regan | 22 | Son | Reporter | California |
| 43 | Raymond Hicoman | 44 | Head | Clerk | Holland |
| 44 | Loretta Hicoman | 33 | Wife | — | Iowa |
| 45 | Ruth Hicoman | 8 | Daughter | — | Oregon |
| 46 | Claire C. Hicoman | 3 | Daughter | — | California |
| 47 | Augusta D. Bloom | 39 | Head | Laborer | California |
| 48 | Henrietta M. Bloom | 20 | Daughter | — | California |
| 49 | Alma D. Dickson | 19 | Daughter | Stenographer | California |
| 50 | Ray F. Dickson | 17 | Son | Messenger | California |
Pedigree Summary
Mary + 6 siblings
Gen 1 · 5 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)