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James Mcnamara — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Denver-County, Colorado
Our Model Tree links this James Mcnamara across the 1930 and 1940 US Censuses in Denver-County, Colorado (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 10-person household.
Age 11
b. ~1929
Male
Son
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Denver-County, Colorado |
| Surname | McNamara |
| Given Name | James D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Denver City |
| 1935 Residence (County) | Denver |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | Denver City |
| 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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Barbara Hooven | Other | — | 3 | ~1937 |
| Joseph Mcnamara | Son | — | 20 | ~1920 |
| Robert Hooven | Other | — | 22 | ~1918 |
| James Mcnamara | Son | — | 11 | ~1929 |
| Eva Dancker | Head | — | 36 | ~1904 |
| Doris Hooven | Daughter | — | 22 | ~1918 |
| Delma Dancker | Other | — | 33 | ~1907 |
| Thomas Blaylock | Son | — | 15 | ~1925 |
| Leota Blaylock | Daughter | — | 17 | ~1923 |
| Helen Mcnamara | Daughter | — | 16 | ~1924 |
Census Appearances
1930
Denver, Colorado
Son, age 1
Denver, Colorado · implied b. ~1929 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McNamara |
| Given Name | James D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Nebraska |
| Occupation | none |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Denver-County, Colorado
Son, age 11
Denver-County, Colorado · implied b. ~1929 — 10 household members
| Surname | McNamara |
| Given Name | James D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Denver City |
| 1935 Residence (County) | Denver |
| Highest Grade | No 4 |
| 1935 Residence | Same House |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 · Colorado
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Sibling
Joseph Mcnamara
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Blaylock
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Mcnamara
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Hooven
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leota Blaylock
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 — Denver-County, Colorado
Open full size
1940 US Federal Census — Denver-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00486-00182)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Huff | 53 | Head | Law Operator | Illinois |
| 2 | Rosemarie Huff | 43 | Wife | — | Illinois |
| 3 | Edward Huff | 20 | Son | Usher | Colorado |
| 4 | Frederick D. Huff | 17 | Son | — | Colorado |
| 5 | Rose Lillian Huff | 15 | Daughter | — | Colorado |
| 6 | Pauline Huff | 14 | Daughter | — | Colorado |
| 7 | Helen May Huff | 11 | Daughter | — | Colorado |
| 8 | John A. Hoglund | 66 | Head | Machinist | Sweden |
| 9 | Selma Hoglund | 61 | Wife | — | Sweden |
| 10 | Eric Paul Hoglund | 34 | Son | Chauffeur | Iowa |
| 11 | Leonard Hoglund | 24 | Son | Laborer | Colorado |
| 12 | Joe Grantham | 29 | Son in law | Laborer | Louisiana |
| 13 | Evelyn Grantham | 32 | Daughter | — | Colorado |
| 14 | Walter Grantham | 2 | Grandson | — | Colorado |
| 15 | Eva Dancker | 36 | Head | Seamstress | Iowa |
| 16 | Delma Dancker | 33 | Student | Truck Driver | Mississippi |
| 17 | Leota Blaylock | 17 | Daughter | — | Colorado |
| 18 | Thomas Blaylock | 15 | Son | — | Colorado |
| 19 | Joseph Jr. Mcnamara | 20 | Son | Usher | Colorado |
| 20 | Helen G. Mcnamara | 16 | Daughter | — | Colorado |
| 21 | James D. Mcnamara THIS PERSON | 11 | Son | — | Colorado |
| 22 | Robert A. Hooven | 22 | Son in Law | Musician | Colorado |
| 23 | Doris Hooven | 22 | Daughter | — | Colorado |
| 24 | Barbara Jo Hooven | 3 | Granddaughter | — | Colorado |
| 25 | Edwin Forbes | 20 | Head | — | Colorado |
| 26 | Forbes | 19 | Wife | — | Colorado |
| 27 | Irvin Graham | 70 | Head | Retired | Iowa |
| 28 | Elizabeth Graham | 67 | Wife | — | Missouri |
| 29 | James Yates | 41 | Head | Auto Painter | Oklahoma |
| 30 | Emma B. Yates | 49 | Wife | — | Oklahoma |
| 31 | Delores J. Miller | 9 | Lodger | — | Colorado |
| 32 | Dave Buchanan | 34 | Head | Proprietor | Eire |
| 33 | Ruby Buchanan | 30 | Wife | — | — |
| 34 | Roberta A. Buchanan | 12 | Daughter | — | — |
| 35 | Leslie Buchanan | 46 | Head | Manager | Ireland |
| 36 | Florence Buchanan | 42 | Wife | Bookkeeper | Illinois |
| 37 | Melvin Buchanan | 22 | Son | Bartender | Illinois |
| 38 | P. H. Iverson | 22 | Head | Laborer | No. Dakota |
| 39 | Gertrude M. Iverson | 18 | Wife | — | No. Dakota |
| 40 | Richard B. Whited | 15 | Lodger | — | Colorado |
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)