JM
James Mcnamara — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sacramento-County, California
Our Model Tree links this James Mcnamara across the 1930 and 1940 US Censuses in Sacramento-County, California (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sacramento-County, California |
| Surname | McNamara |
| Given Name | James M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Sacramento |
| 1935 Residence (County) | Sacramento |
| Additional Details | |
| Highest Grade | Yes 5 |
| 1935 Residence | Same House |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Est. Birth Year | ~1929 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| James Mcnamara | Son | — | 11 | ~1929 |
| John Mcnamara | Head | — | 45 | ~1895 |
| Josephine Mcnamara | Spouse | — | 42 | ~1898 |
| John Mcnamara | Son | — | 7 | ~1933 |
| Agnes Mcnamara | Daughter | — | 10 | ~1930 |
| Francis Mcnamara | Son | — | 6 | ~1934 |
| Mary Mcnamara | Daughter | — | 13 | ~1927 |
Census Appearances
1930
Sacramento, California
Son, age 2
Sacramento, California · implied b. ~1928 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNamara |
| Given Name | James J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Sacramento-County, California
Son, age 11
Sacramento-County, California · implied b. ~1929 — 7 household members
| Surname | McNamara |
| Given Name | James M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Sacramento |
| 1935 Residence (County) | Sacramento |
| Highest Grade | Yes 5 |
| 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 James Mcnamara across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Mcnamara
Son · 1940 · age 11 · b. ~1929 · California
★ You are viewing this record
Sibling
Agnes Mcnamara
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Mcnamara
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mcnamara
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mcnamara
Sibling · 1940 · age 7
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 — Sacramento-County, California
Open full size
1940 US Federal Census — Sacramento-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00283-00472)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William R. White | 63 | Father-in-law | Carpenter | Missouri |
| 42 | Gertrude L. White | 59 | Mother-in-law | Nurse | Missouri |
| 43 | John Mcnamara | 45 | Head | Car Inspector | Irish Free State |
| 44 | Josephine M. Mcnamara | 42 | Wife | — | California |
| 45 | Mary E. Mcnamara | 13 | Daughter | — | California |
| 46 | James M. Mcnamara THIS PERSON | 11 | Son | — | California |
| 47 | Agnes A. Mcnamara | 10 | Daughter | — | California |
| 48 | John F. Mcnamara | 7 | Son | — | California |
| 49 | Francis T. Mcnamara | 6 | Son | — | California |
| 50 | Eugene G. Kunz | 48 | Head | Proprietor | California |
| 51 | Mary T. Kunz | 40 | Wife | — | Italy |
| 52 | Louise K. Kunz | 18 | Daughter | — | California |
| 53 | Eugene G. Jr. Kunz | 16 | Son | — | California |
| 54 | Thomas Nightingale | 58 | Head | Electrician | New York |
| 55 | Mary Nightingale | 62 | Wife | Carpenter | Italy |
| 56 | Charles W. Palmer | 56 | Head | Carpenter | California |
| 57 | Rose E. Palmer | 49 | Wife | Dress Fitter | California |
| 58 | William J. Christopher | 54 | Head | Carpenter | England |
| 59 | Sarah M. Christopher | 55 | Wife | — | England |
| 60 | Verna Christopher | 19 | Daughter | Stenographer | California |
| 61 | James R. Miller | 31 | Head | Machinist | Missouri |
| 62 | Ann S. Miller | 32 | Wife | — | Washington |
| 63 | Gerald A. Miller | 10 | Son | — | Washington |
| 64 | Lois A. Miller | 3 | Daughter | — | California |
| 65 | Clemence Berwick | 32 | Head | — | Canada French |
| 66 | Emma A. Facchine | 63 | Head | — | California |
| 67 | Ellen E. Facchine | 37 | Daughter | Stenographer | California |
| 68 | Thelma M. Facchine | 34 | Daughter | Book Keeper | California |
| 69 | Arthur V. Facchine | 30 | Son | Printer | California |
| 70 | Robert J. Gwinn | 24 | Head | Estimator | California |
| 71 | Bernadette A. Gwinn | 25 | Wife | — | California |
| 72 | Roberta B. Gwinn | 2 | Daughter | — | California |
| 73 | Susan L. Gwinn | 0 | Daughter | — | California |
| 74 | Sadie E. Cole | 55 | Mother | — | California |
| 75 | Louise A. Roddy | 59 | Head | — | California |
| 76 | Louis J. Roddy | 31 | Son | Senior Clerk | California |
| 77 | Elizabeth C. Roddy | 26 | Daughter | Stenographer | California |
| 78 | Charles P. Roddy | 18 | Son | — | California |
| 79 | Arthur E. Smith | 77 | Head | Laborer | Canada English |
| 80 | Louisa Smith | 69 | Wife | — | England |
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)