JM
John Mccarthy — 1920 US Census Record
Model Tree available1920 United States Federal Census · San Francisco, California
Our Model Tree links this John Mccarthy across the 1920, 1930 and 1940 US Censuses in San Francisco, California (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1913), then head of a 3-person household.
Age 7
b. ~1913
Male
Son
Born: California
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | San Francisco, California |
| Surname | McCarthy |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Additional Details | |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1913 |
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.
3 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Mccarthy | Head | — | 44 | ~1876 |
| John Mccarthy | Son | — | 7 | ~1913 |
| Isabelle Mccarthy | Spouse | — | 34 | ~1886 |
Census Appearances
1920
San Francisco, …
Son, age 7
San Francisco, California · implied b. ~1913 — 3 household members
| Surname | McCarthy |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
Son, age 17
San Francisco, California · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarty |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Son, age 27
San-Francisco-County, California · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mc Carthy |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | Grocery Clerk |
| Industry | Grocery Store |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 298 |
| Highest Grade | Hs 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 John Mccarthy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Mc Carthy (~0.92 confidence) and father John Mccarthy (~0.92 confidence) and mother Jane Mccarty (~0.92 confidence) and mother Isabelle Mccarthy (~0.92 confidence) and mother Isabell Mc Carthy (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Mc Carthy
b. ~1876
Source father
● Household
· direct · ~0.92
Father
John Mccarthy
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Jane Mccarty
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Isabelle Mccarthy
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Isabell Mc Carthy
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mccarthy
Son · 1920 · age 7 · b. ~1913 · California
★ You are viewing this record
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:1920:14thcensusofpopu134unit:0071)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Frank Sheldon | 36 | Head | Salesman | California |
| 52 | Edward Connolly | 30 | Head | Teamster | California |
| 53 | Jeanne Connolly | 20 | Wife | None | California |
| 54 | Jeanne Connolly | 0 | Daughter | None | California |
| 55 | John Olsen | 35 | Head | Owner | California |
| 56 | Muriel Olsen | 35 | Wife | None | California |
| 57 | Helen M. Olsen | 4 | Daughter | None | California |
| 58 | Raymond G. Nygaard | 22 | Boarder | Typist | California |
| 59 | William H. Harrison | 51 | Head | Officer | California |
| 60 | Clara J. Harrison | 37 | Wife | None | California |
| 61 | Myrtle Harrison | 21 | Daughter | Stenographer | California |
| 62 | Isaac Harris | 46 | Head | Yes | Russia |
| 63 | Pauline Harris | 17 | Daughter | Yes | New York |
| 64 | Belle Gantner | 31 | Cousin | Yes | Russia |
| 65 | Dorothy Gantner | 10 | Cousin | None | California |
| 66 | James Viorato | 34 | Head | Yes | Mexico |
| 67 | Rena Viorato | 23 | Wife | None | California |
| 68 | Aileen Viorato | 1 | Daughter | None | California |
| 69 | Fred H. Chase | 56 | Head | Saleslady | California |
| 70 | Rose Chase | 20 | Daughter | None | California |
| 71 | Elizabeth Cowan | 17 | Daughter | None | California |
| 72 | Harold Cowan | 21 | Son-in-law | Yes | Australia |
| 73 | Mary Jane Cowan | 2 | Grand-daughter | None | California |
| 74 | Rose Cowan | 1 | Grand-daughter | None | California |
| 75 | Elizabeth Madama | 65 | Servant | Yes | Ireland |
| 76 | Rose Cuffey | 58 | Head | Yes | Canada |
| 77 | William Speer | 33 | Head | Laborer | Kansas |
| 78 | Dora Speer | 32 | Wife | None | California |
| 79 | Fred B. Arnold | 28 | Head | Pressman | North Carolina |
| 80 | Jennie Arnold | 26 | Wife | Yes | Norway |
| 81 | Ralph Arnold | 2 | Son | None | California |
| 82 | Jennie Warren | 27 | Head | Saleslady | Nebraska |
| 83 | Leon Veyrand | 44 | Head | Yes | France |
| 84 | Alice Veyrand | 41 | Wife | Yes | France |
| 85 | Leo Veyrand | 13 | Son | Yes | England |
| 86 | George B. Erickson | 34 | Head | Truck Driver | California |
| 87 | Rose Erickson | 25 | Wife | None | California |
| 88 | George Jr. Erickson | 4 | Son | None | California |
| 89 | Mary E. Erickson | 56 | Mother | None | California |
| 90 | Roy L. Erickson | 35 | Brother | Operator | California |
| 91 | John F. Mccarthy | 44 | Head | Yes | California |
| 92 | Isabelle Mccarthy | 34 | Wife | Yes | California |
| 93 | John A. Mccarthy THIS PERSON | 7 | Son | None | California |
| 94 | August Marchshall | 66 | Head | Yes | Germany |
| 95 | Elizabeth Marchshall | 43 | Wife | Yes | California |
| 96 | Bertha Marchshall | 26 | Daughter | Forewoman | California |
| 97 | Alma Marchshall | 24 | Daughter | Bookkeeper | California |
| 98 | Rudolph Marchshall | 22 | Son | Check Maker | California |
| 99 | Irma Marchshall | 17 | Daughter | Binder | California |
| 100 | Alice Marchshall | 14 | Daughter | None | California |
Related Census Records
Pedigree Summary
John
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)