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Mary Mchugh — 1940 US Census Record
Linked across censuses1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Mary Mchugh across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed) — first a spouse (b.~1888), then head of a 6-person household.
Age 52
b. ~1888
Female
Spouse
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | McHugh |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | SF |
| 1935 Residence (County) | SF |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Calif |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Sf |
| Est. Birth Year | ~1888 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Mchugh | Daughter | — | 20 | ~1920 |
| Paul Mchugh | Son | — | 24 | ~1916 |
| Mary Mchugh | Spouse | — | 52 | ~1888 |
| Paul Mchugh | Head | — | 55 | ~1885 |
| Betty Mchugh | Daughter | — | 16 | ~1924 |
| Kathleen Mchugh | Daughter | — | 12 | ~1928 |
Census Appearances
1920
San Francisco, …
Spouse, age 31
San Francisco, California · implied b. ~1889 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McHugh |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1907 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1910 |
| Birthplace (normalized) | ireland |
1930
San Francisco, …
Spouse, age 42
San Francisco, California · implied b. ~1888 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McHugh |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Age at First Marriage | 26 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
San-Francisco-County, California
Spouse, age 52
San-Francisco-County, California · implied b. ~1888 — 6 household members
| Surname | McHugh |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | SF |
| 1935 Residence (County) | SF |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Calif |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Mchugh across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Mchugh
Spouse · 1940 · age 52 · b. ~1888 · California
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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
39 people indexed on this census page (nara:1940:m-t0627-00322-00436)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James Andrews | 23 | Head | Grocery Clerk | California |
| 42 | Anna Andrews | 60 | Mother | — | Ireland |
| 43 | Milton Frenk | 43 | Head | Wholesale Clerk | Calif |
| 44 | Velma Frenk | 39 | Wife | — | Pennsylvania |
| 45 | Manford Hicks | 27 | Head | Grocery Clerk | Colorado |
| 46 | Aileen Hicks | 27 | Wife | — | California |
| 47 | Joe Lang | 46 | Head | Auto Mechanic | Vienna |
| 48 | Carolyne Lang | 43 | Wife | Caterer | Florida |
| 49 | Joseph Lang | 14 | Son | — | Calif |
| 50 | William Lang | 10 | Son | — | Calif |
| 51 | Mary Lang | 15 | Daughter | — | Calif |
| 52 | Suzanne Lang | 13 | Daughter | — | Calif |
| 53 | Richard Lang | 7 | Son | — | Calif |
| 54 | Harry Fieldhouse | 59 | Head | Cabinet Maker | England |
| 55 | Mary Fieldhouse | 58 | Wife | — | Cusey |
| 56 | Robert Smith | 45 | Head | Recreation Supervisor | Calif |
| 57 | Edythe Smith | 42 | Wife | — | Illinois |
| 58 | Hunt Robert Smith | 13 | Nephew | — | Calif |
| 59 | Philip Creba | 64 | Head | Barber | England |
| 61 | A. Mickelsen | 34 | Head | Car Painter | Norway |
| 62 | Louise Mickelsen | 38 | Wife | Supervisor | Kentucky |
| 63 | Doris Mickelsen | 9 | Daughter | — | Washington |
| 64 | Robert Nelson | 18 | Brother-in-law | New Worker | Kentucky |
| 65 | Paul Mchugh | 55 | Head | — | Ireland |
| 66 | Mary Mchugh THIS PERSON | 52 | Wife | — | Ireland |
| 67 | Paul Mchugh | 24 | Son | Elevator Operator | Calif |
| 68 | Mary Mchugh | 20 | Daughter | Saleslady | Calif |
| 69 | Betty Mchugh | 16 | Daughter | — | Calif |
| 70 | Kathleen Mchugh | 12 | Daughter | — | Calif |
| 71 | Lee Beardsley | 26 | Head | Sailor | California |
| 72 | Katherine Hamilton | 42 | Mother | — | Texas |
| 73 | Florence Widner | 21 | Step-Sister | — | Calif |
| 74 | Katherine Widner | 1 | Niece | — | California |
| 75 | Albert Fackler | 56 | Head | — | California |
| 76 | Margaret Fackler | 30 | Daughter | Clerical | California |
| 77 | George Mayer | 32 | Head | Clerk | California |
| 78 | Lucille Mayer | 33 | Wife | — | California |
| 79 | Barbara Mayer | 4 | Daughter | — | California |
| 80 | Thomas Mayer | 2 | Son | — | California |
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)