RM
Richard Murphy — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Richard Murphy across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed), with identified parents Helen & Helen — first a son (b.~1911), then head of a 3-person household.
Age 29
b. ~1911
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Murphy |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Occupation | Printer |
| Industry | Paper Box Company |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 900 |
| Highest Grade | No H3 |
| 1935 Residence | Same house |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Printer |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1911 |
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 1940 census.
| Name | Relation to head | Relative to Richard | Age | Birth yr |
|---|---|---|---|---|
| Helen Murphy | Spouse | — | 60 | ~1880 |
| Richard Murphy | Head | — | 58 | ~1882 |
| Richard Murphy | Son | — | 29 | ~1911 |
Census Appearances
1920
San Francisco, …
Son, age 9
San Francisco, California · implied b. ~1911 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Scotland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Son, age 19
San Francisco, California · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Northern Ireland |
| Mother's Birthplace | Scotland |
| Occupation | Trucker |
| Industry | Express |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Son, age 29
San-Francisco-County, California · implied b. ~1911 — 3 household members
| Surname | Murphy |
| Given Name | Richard |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | Printer |
| Industry | Paper Box Company |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 900 |
| Highest Grade | No H3 |
| 1935 Residence | Same house |
| 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 Richard Murphy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Helen Murphy (~0.92 confidence) and mother Helen Murphy (~0.92 confidence) and father Richard Murphy (~0.92 confidence) and father Richard Murphy (~0.92 confidence) and mother Mollie Murphy (~0.92 confidence) and father Richard Murphy (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Helen Murphy
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Helen Murphy
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
Richard Murphy
b. ~1880
Source father
● Household
· direct · ~0.92
Father
Richard Murphy
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Mollie Murphy
b. ~1882
Source mother
● Household
· direct · ~0.92
Father
Richard Murphy
b. ~1882
Source father
● Household
· direct · ~0.92
This person
Anchor record
Richard Murphy
Son · 1940 · age 29 · b. ~1911 · California
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — San-Francisco-County, California
Open full size
1940 US Federal Census — San-Francisco-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00302-00290)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas Burns | 53 | Head | Longshoreman | Irish Free State |
| 2 | Mary Burns | 51 | Wife | — | England |
| 3 | Thomas Burns | 27 | Son | Longshoreman | Idaho |
| 4 | Edward Burns | 23 | Son | Butcher'S Helper | California |
| 5 | John Burns | 15 | Son | — | California |
| 6 | Margaret Burns | 13 | Daughter | — | California |
| 7 | Gertrude Burns | 11 | Daughter | — | California |
| 8 | Mary Johnson | 66 | Head | — | California |
| 9 | Antonio Casanova | 54 | Lodger | Box Sewer | Porto Rico |
| 10 | Irena Casanova | 45 | Daughter | — | California |
| 11 | Mildred Casanova | 19 | Grand-daughter | — | California |
| 12 | William Daly | 53 | Head | Streetcar Motorman | Irish Free State |
| 13 | Mary Daly | 52 | Wife | — | Irish Free State |
| 14 | Ilene Daly | 21 | Daughter | Beauty Operator | California |
| 15 | Albert Roland | 39 | Head | Carpenter | California |
| 16 | Gladys Roland | 31 | Wife | — | Utah |
| 17 | William Roland | 9 | Son | — | California |
| 18 | Alberta Roland | 7 | Daughter | — | California |
| 19 | Carol Roland | 6 | Daughter | — | California |
| 20 | Wade Roland | 2 | Son | — | California |
| 21 | Arthur W. De Mars | 60 | Head | Mill Wright | Massachusetts |
| 22 | Laura De Mars | 54 | Wife | — | Massachusetts |
| 23 | Karl Stumm | 70 | Head | — | Germany |
| 24 | Maria Lombardi | 60 | Head | — | Italy |
| 25 | Richard Murphy | 58 | Head | Packer | Irish Free State |
| 26 | Helen Murphy | 60 | Wife | — | Scotland |
| 27 | Richard Murphy THIS PERSON | 29 | Son | Printer | California |
| 28 | William Hannigan | 54 | Head | Laborer | New Jersey |
| 29 | Harold Rossin | 37 | Head | — | California |
| 30 | Clara Rossin | 60 | Mother | — | California |
| 31 | Walter Rossin | 21 | Brother | Office Boy | California |
| 32 | Julia Rossin | 18 | Sister | Floor Girl | California |
| 33 | James Rossin | 15 | Brother | — | California |
| 34 | Nels Kristensen | 47 | Head | Longshoreman | Denmark |
| 35 | James Ballance | 49 | Head | Steamfitter Helper | New York |
| 36 | Frances Ballance | 40 | Wife | — | Russia |
| 37 | Elizabeth Ballance | 18 | Daughter | New Worker | California |
| 38 | James Ballance | 17 | Son | New Worker | California |
| 39 | Margaret Ballance | 15 | Daughter | — | California |
| 40 | Leonard Ballance | 13 | Son | — | California |
Pedigree Summary
Richard
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)