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Margaret Mcnamara — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Nassau-County, New York
Our Model Tree links this Margaret Mcnamara across the 1930 and 1940 US Censuses in Nassau-County, New York (XGBoost, ~Confirmed) — first a daughter (b.~1918), then head of a 7-person household.
Age 22
b. ~1918
Female
Daughter
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Nassau-County, New York |
| Surname | McNamara |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Hempstead |
| 1935 Residence (County) | Nassau |
| Additional Details | |
| Occupation | Sales lady |
| Industry | Department Store |
| Class of Worker | PW |
| Hours Worked | 61 |
| Income (1939) | 728 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Salesperson |
| Township / Ward | Hempstead |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Patrick Mcnamara | Son | — | 20 | ~1920 |
| Anna Mcnamara | Daughter | — | 16 | ~1924 |
| Andrew Mcnamara | Head | — | 44 | ~1896 |
| Margaret Mcnamara | Daughter | — | 22 | ~1918 |
| Catherine Mcnamara | Daughter | — | 13 | ~1927 |
| Mary Mcnamara | Spouse | — | 43 | ~1897 |
| Mary Mcnamara | Daughter | — | 17 | ~1923 |
Census Appearances
1930
Nassau, New …
Daughter, age 11
Nassau, New York · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNamara |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Nassau-County, New …
Daughter, age 22
Nassau-County, New York · implied b. ~1918 — 7 household members
| Surname | McNamara |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | Hempstead |
| 1935 Residence (County) | Nassau |
| Occupation | Sales lady |
| Industry | Department Store |
| Class of Worker | PW |
| Hours Worked | 61 |
| Income (1939) | 728 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Margaret Mcnamara across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Mcnamara
Daughter · 1940 · age 22 · b. ~1918 · New York
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Sibling
Anna Mcnamara
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patrick Mcnamara
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Mcnamara
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mcnamara
Sibling · 1940 · age 17
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
1940 US Federal Census — Nassau-County, New York
Open full size
1940 US Federal Census — Nassau-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02685-00111)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anne Lafferty | 30 | Head | — | New York |
| 42 | Willard Stuart | 58 | Lodger | Contractor | New York |
| 43 | Alexandra Urquhart | 34 | Lodger | — | New York |
| 44 | Edna Cornavont | 25 | Lodger | Clerk | New York |
| 45 | Louis Brazier | 45 | Head | Clerk | New York |
| 46 | Mina Brazier | 49 | Wife | — | Newfoundland |
| 47 | Louis Jr. Brazier | 16 | Son | — | New York |
| 48 | Edward Molenhauer | 36 | Head | Chauffeur | New York |
| 49 | Mary Molenhauer | 35 | Wife | — | New York |
| 50 | Alice Molenhauer | 11 | Daughter | — | New York |
| 51 | Barbara Molenhauer | 8 | Daughter | — | New York |
| 52 | Joan Molenhauer | 1 | Daughter | — | New York |
| 53 | Charles Bromberger | 35 | Head | Manager | New York |
| 54 | Anna Bromberger | 34 | Wife | — | New York |
| 55 | Charles Bromberger | 13 | Son | — | New York |
| 56 | Nathan Bromberger | 11 | Son | — | New York |
| 57 | Harold Bromberger | 9 | Son | — | New York |
| 58 | Dorothy Bromberger | 8 | Daughter | — | New York |
| 59 | Kenneth Bromberger | 6 | Son | — | New York |
| 60 | William Mayer | 49 | Head | Mechanic | New York |
| 61 | Marie Mayer | 45 | Wife | — | New York |
| 62 | Howard Mayer | 25 | Son | Manager | New York |
| 63 | Andrew Mcnamara | 44 | Head | Milkman | Irish Free State |
| 64 | Mary Mcnamara | 43 | Wife | — | Irish Free State |
| 65 | Margaret Mcnamara THIS PERSON | 22 | Daughter | Sales Lady | New York |
| 66 | Patrick Mcnamara | 20 | Son | Clerk | New York |
| 67 | Mary Mcnamara | 17 | Daughter | Sales Lady | New York |
| 68 | Anna Mcnamara | 16 | Daughter | — | New York |
| 69 | Catherine Mcnamara | 13 | Daughter | — | New York |
| 70 | Harry Pappas | 44 | Head | Waiter | Turkey |
| 71 | Mary Pappas | 36 | Wife | — | Turkey |
| 72 | Ida Pappas | 12 | Daughter | — | New York |
| 73 | Agnes Pappas | 10 | Daughter | — | New York |
| 74 | Gregory Pappas | 6 | Son | — | New York |
| 75 | Catherine Pappas | 3 | Daughter | — | New York |
| 76 | Benjamin Roemer | 59 | Head | Proprietor | Russia |
| 77 | Catherine Roemer | 54 | Wife | — | New York |
| 78 | Norman Roemer | 23 | Son | Lawyer | New York |
| 79 | Sydney Roemer | 21 | Son | Manager | New York |
| 80 | Mary Roemer | 24 | Daughter-in-law | — | New York |
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)