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John Mcnamara — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lackawanna-County, Pennsylvania
Our Model Tree links this John Mcnamara across the 1930 and 1940 US Censuses in Lackawanna-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lackawanna-County, Pennsylvania |
| Surname | McNamara |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Scranton |
| 1935 Residence (County) | Lackawanna |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Scranton |
| Est. Birth Year | ~1928 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Catherine Mcnamara | Daughter | — | 7 | ~1933 |
| Mary Mcnamara | Daughter | — | 10 | ~1930 |
| Leo Mcnamara | Head | — | 48 | ~1892 |
| Robert Mcnamara | Son | — | 16 | ~1924 |
| John Mcnamara | Son | — | 12 | ~1928 |
| Joseph Mcnamara | Son | — | 5 | ~1935 |
| Leo Mcnamara | Son | — | 14 | ~1926 |
| Francis Mcnamara | Son | — | 2 | ~1938 |
| Mary Mcnamara | Spouse | — | 46 | ~1894 |
Census Appearances
1930
Lackawanna, Pennsylvania
Son, age 1
Lackawanna, Pennsylvania · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNamara |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Lackawanna-County, Pennsylvania
Son, age 12
Lackawanna-County, Pennsylvania · implied b. ~1928 — 9 household members
| Surname | McNamara |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Scranton |
| 1935 Residence (County) | Lackawanna |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mcnamara
Son · 1940 · age 12 · b. ~1928 · Pennsylvania
★ You are viewing this record
Sibling
Robert Mcnamara
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Mcnamara
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mcnamara
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Mcnamara
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leo Mcnamara
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Mcnamara
Sibling · 1940 · age 5
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 — Lackawanna-County, Pennsylvania
Open full size
1940 US Federal Census — Lackawanna-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03686-00028)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anna Kramer | 46 | Head | — | Pennsylvania |
| 2 | John Kramer | 28 | Son | Watch Repairman | Pennsylvania |
| 3 | Fred Youngman | 36 | Head | Maintenance Man | Pennsylvania |
| 4 | Lillian Youngman | 33 | Wife | — | Pennsylvania |
| 5 | Joseph Youngman | 4 | Son | — | Pennsylvania |
| 6 | John Sirwatka | 47 | Head | Machinist | Austria |
| 7 | Julia Sirwatka | 46 | Wife | — | Pennsylvania |
| 8 | Anna Sirwatka | 20 | Daughter | New Worker | Pennsylvania |
| 9 | Marie Sirwatka | 19 | Daughter | New Worker | Pennsylvania |
| 10 | Phyllis Sirwatka | 17 | Daughter | — | Pennsylvania |
| 11 | Gloria Sirwatka | 15 | Daughter | — | Pennsylvania |
| 12 | Paul Sirwatka | 13 | Son | — | Pennsylvania |
| 13 | Peter Conti | 25 | Head | Truck Driver | Pennsylvania |
| 14 | Anne Conti | 21 | Wife | — | Pennsylvania |
| 15 | Frank Conti | 2 | Son | — | Pennsylvania |
| 16 | Jeanne Conti | 1 | Daughter | — | Pennsylvania |
| 17 | Anna Richar | 58 | Head | — | Pennsylvania |
| 18 | John Richar | 36 | Son | Truck Driver | Pennsylvania |
| 19 | Elizabeth E. Ryder | 34 | Daughter | Millinery Saleslady | Pennsylvania |
| 20 | Ann Ryder | 4 | Granddaughter | — | Pennsylvania |
| 21 | Harry V. Ackermann | 43 | Head | Salesman | Pennsylvania |
| 22 | Lena Ackermann | 45 | Wife | — | Pennsylvania |
| 23 | Madlyn Ackermann | 18 | Daughter | New Worker | Pennsylvania |
| 24 | Harry Ackermann | 14 | Son | — | Pennsylvania |
| 25 | Leo Mcnamara | 48 | Head | — | Pennsylvania |
| 26 | Mary Mcnamara | 46 | Wife | — | Pennsylvania |
| 27 | Robert Mcnamara | 16 | Son | — | Pennsylvania |
| 28 | Leo Mcnamara | 14 | Son | — | Pennsylvania |
| 29 | John Mcnamara THIS PERSON | 12 | Son | — | Pennsylvania |
| 30 | Mary Mcnamara | 10 | Daughter | — | Pennsylvania |
| 31 | Catherine Mcnamara | 7 | Daughter | — | Pennsylvania |
| 32 | Joseph Mcnamara | 5 | Son | — | Pennsylvania |
| 33 | Francis Mcnamara | 2 | Son | — | Pennsylvania |
| 34 | Robert Miller | 35 | Head | Supervisor | Connecticut |
| 35 | Nora Miller | 31 | Wife | — | Pennsylvania |
| 36 | Mary Sirwatka | 70 | Head | — | Hungary |
| 37 | Nathan Brick | 54 | Head | Huckster | Poland |
| 38 | Mary Brick | 54 | Wife | — | Hungary |
| 39 | Ruth Irving | 26 | Daughter | Salesman | Pennsylvania |
| 40 | Ruth Irving | 26 | Daughter | — | Pennsylvania |
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)