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John Mcnamara — 1940 US Census Record
Model Tree available1940 United States Federal Census · Orleans-County, Louisiana
Our Model Tree links this John Mcnamara across the 1920, 1930 and 1940 US Censuses in Orleans-County, Louisiana (XGBoost, ~Confirmed), with identified parents John & Margaret — first a son (b.~1902), then head of a 4-person household.
Age 38
b. ~1902
Male
Son
Born: Louisiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Orleans-County, Louisiana |
| Surname | McNamara |
| Given Name | John J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | New Orleans City |
| 1935 Residence (County) | Orleans Parish |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Township / Ward | New Orleans City |
| Est. Birth Year | ~1902 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Frances Mcnamara | Daughter | — | 39 | ~1901 |
| John Mcnamara | Head | — | 67 | ~1873 |
| John Mcnamara | Son | — | 38 | ~1902 |
| Maude Mcnamara | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Orleans, Louisiana
Son, age 18
Orleans, Louisiana · implied b. ~1902 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNamara |
| Given Name | John C. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Occupation | Tasi-cat |
| Industry | Hotel |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1930
Orleans, Louisiana
Son, age 28
Orleans, Louisiana · implied b. ~1902 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNamara |
| Given Name | John Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Occupation | Laborer |
| Industry | Contractor |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Orleans-County, Louisiana
Son, age 38
Orleans-County, Louisiana · implied b. ~1902 — 4 household members
| Surname | McNamara |
| Given Name | John J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | New Orleans City |
| 1935 Residence (County) | Orleans Parish |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
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 Mcnamara across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Mcnamara (~0.92 confidence) and mother Margaret Mcnamara (~0.92 confidence) and father John Mcnamara (~0.92 confidence) and mother Frances Mcnamara (~0.92 confidence) and father John Mcnamara (~0.92 confidence) and mother Maude Mcnamara (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Mcnamara
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Margaret Mcnamara
b. ~1871
Source mother
● Household
· direct · ~0.92
Father
John Mcnamara
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Frances Mcnamara
b. ~1877
Source mother
● Household
· direct · ~0.92
Father
John Mcnamara
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Maude Mcnamara
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mcnamara
Son · 1940 · age 38 · b. ~1902 · Louisiana
★ You are viewing this record
Sibling
Frances Mcnamara
Sibling · 1940 · age 39
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 — Orleans-County, Louisiana
Open full size
1940 US Federal Census — Orleans-County, Louisiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01428-00189)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Sadie Ensminger | 52 | Sister | Seamstress | Louisiana |
| 42 | William J. Warnes | 29 | Head | Radio Repair | Louisiana |
| 43 | Thelma Warnes | 26 | Wife | — | Louisiana |
| 44 | Elwin Robinson | 50 | Head | — | Louisiana |
| 45 | Carrie Robinson | 42 | Wife | Seamstress | Louisiana |
| 46 | Billy Robinson | 17 | Son | — | Louisiana |
| 47 | Nellie Robinson | 13 | Daughter | — | Louisiana |
| 48 | Bertha Beasley | 42 | Head | Seamstress | Indiana |
| 49 | Frederick A. Lotz | 71 | Head | — | Louisiana |
| 50 | Louise Lotz | 63 | Wife | — | Louisiana |
| 51 | Edna Lotz | 40 | Daughter | — | Louisiana |
| 52 | Frederick H. Lotz | 36 | Head | Mechanic | Louisiana |
| 53 | Leona Lotz | 31 | Wife | — | Louisiana |
| 54 | Lois Lotz | 8 | Daughter | — | Louisiana |
| 55 | Frederick H. Jr. Lotz | 6 | Son | — | Louisiana |
| 56 | Marie Oubre | 75 | Head | Lodging House Keeper | Louisiana |
| 57 | Victor H. Pinkham | 65 | Head | — | Maine |
| 58 | Annie Pinkham | 62 | Wife | — | Louisiana |
| 59 | Anna Astries | 9 | Boarder | — | New York |
| 60 | Raymond Astries | 8 | Boarder | — | New York |
| 61 | Charles Astries | 7 | Boarder | — | New York |
| 62 | Henry Leclaux | 64 | Head | Postman | Louisiana |
| 63 | Joseph W. Mclean | 35 | Son-in-law | Entry Writer | New York |
| 64 | Ruth Mclean | 37 | Daughter | — | Louisiana |
| 65 | Eugene Summers | 51 | Head | Engineer | Alabama |
| 66 | Ruth Summers | 42 | Wife | — | Alabama |
| 67 | Eugene Jr. Summers | 20 | Son | Soda Clerk | Alabama |
| 68 | Ruth Summers | 15 | Daughter | — | Louisiana |
| 69 | Nancy Sunderland | 79 | Mother-in-law | — | Illinois |
| 70 | Alice S. Boreil | 52 | Head | — | Louisiana |
| 71 | William Rappold | 27 | Head | Coach | Louisiana |
| 72 | Mary Rappold | 24 | Wife | — | Alabama |
| 73 | Catherine Begley | 70 | Head | Lodging House Keeper | Germany |
| 74 | Charles Mcnaught | 75 | Boarder | — | Illinois |
| 75 | Sarah B. Pilot | 68 | Head | — | Poland |
| 76 | Fannie Pilot | 40 | Daughter | — | Louisiana |
| 77 | John J. Mcnamara | 67 | Head | Cashier | Louisiana |
| 78 | Maude Mcnamara | 60 | Wife | — | Louisiana |
| 79 | Frances M. Mcnamara | 39 | Daughter | — | Louisiana |
| 80 | John J. Jr. Mcnamara THIS PERSON | 38 | Son | — | Louisiana |
Pedigree Summary
John + 1 sibling
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)