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James Blake — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Taylor-County, Iowa
Our Model Tree links this James Blake across the 1930 and 1940 US Censuses in Taylor-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 8-person household.
Age 18
b. ~1922
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Taylor-County, Iowa |
| Surname | Blake |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Taylor |
| Additional Details | |
| Occupation | Janitor |
| Industry | Public School |
| Class of Worker | PW |
| Income (1939) | 75 |
| Highest Grade | H 3 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Janitor |
| Township / Ward | Clayton Twp |
| Est. Birth Year | ~1922 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Blake | Son | — | 18 | ~1922 |
| Howard Blake | Son | — | 10 | ~1930 |
| Irene Blake | Spouse | — | 39 | ~1901 |
| Marian Blake | Daughter | — | 14 | ~1926 |
| Dorothy Blake | Daughter | — | 17 | ~1923 |
| Allen Blake | Son | — | 4 | ~1936 |
| Ava Blake | Daughter | — | 6 | ~1934 |
| George Blake | Head | — | 49 | ~1891 |
Census Appearances
1930
Taylor, Iowa
Son, age 8
Taylor, Iowa · implied b. ~1922 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blake |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Taylor-County, Iowa
Son, age 18
Taylor-County, Iowa · implied b. ~1922 — 8 household members
| Surname | Blake |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Taylor |
| Occupation | Janitor |
| Industry | Public School |
| Class of Worker | PW |
| Income (1939) | 75 |
| Highest Grade | H 3 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Blake across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Blake
Son · 1940 · age 18 · b. ~1922 · Iowa
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Sibling
Dorothy Blake
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ava Blake
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howard Blake
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Allen Blake
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marian Blake
Sibling · 1940 · age 14
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 — Taylor-County, Iowa
Open full size
1940 US Federal Census — Taylor-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01207-00756)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Herman Roberts | 61 | Head | Farmer | Iowa |
| 2 | Mary R Roberts | 60 | Wife | — | Iowa |
| 3 | Eugene Tompson | 22 | Hired | Farm Labor | Iowa |
| 4 | Jasper Lyons | 59 | Head | Farmer | Tennessee |
| 5 | Lizzie Lyons | 53 | Wife | — | Tennessee |
| 6 | Delmar Pullen | 20 | Hired | Farm Labor | Iowa |
| 7 | Leon Lyons | 31 | Son | Trucker | Iowa |
| 8 | Arthur Louie | 50 | Head | Farmer | Iowa |
| 9 | Fern C Louie | 41 | Wife | — | Missouri |
| 10 | Pauline Louie | 19 | Daughter | Teaching | Iowa |
| 11 | Glen Douglas | 45 | Head | Farmer | Iowa |
| 12 | Pearl Douglas | 42 | Wife | — | Iowa |
| 13 | Darline O Douglas | 17 | Daughter | — | Iowa |
| 14 | Dorothy Douglas | 15 | Daughter | — | Iowa |
| 15 | Lulitta Douglas | 11 | Daughter | — | Iowa |
| 16 | Glen Luc Douglas | 8 | Son | — | Iowa |
| 17 | Charles Devoe | 38 | Head | Farmer | Iowa |
| 18 | Mildred Devoe | 35 | Wife | — | Iowa |
| 19 | Doyal Devoe | 8 | Son | — | Iowa |
| 20 | Donna Devoe | 7 | Daughter | — | Iowa |
| 21 | Lois Devoe | 6 | Daughter | — | Iowa |
| 22 | Ralph Ridner | 21 | Hired | Farm Labor | Iowa |
| 23 | Mark Robinson | 42 | Head | Farmer | Iowa |
| 24 | Lulu Robinson | 42 | Wife | — | Iowa |
| 25 | Helen Robinson | 16 | Daughter | — | Iowa |
| 26 | Norma Robinson | 13 | Daughter | — | Iowa |
| 27 | Marjorie Robinson | 11 | Daughter | — | Iowa |
| 28 | Leland Jones | 37 | Head | Farmer | Iowa |
| 29 | Beulah Jones | 33 | Wife | — | Iowa |
| 30 | Robert Jones | 12 | Son | — | Iowa |
| 31 | Richard Jones | 10 | Son | — | Iowa |
| 32 | Gerald Jones | 2 | Son | — | Iowa |
| 33 | George Blake | 49 | Head | Laying Ditch | Iowa |
| 34 | Irene Blake | 39 | Wife | — | Iowa |
| 35 | James Blake THIS PERSON | 18 | Son | Janitor | Iowa |
| 36 | Dorothy Blake | 17 | Daughter | Librarian | Iowa |
| 37 | Marian Blake | 14 | Daughter | — | Iowa |
| 38 | Howard Blake | 10 | Son | — | Iowa |
| 39 | Ava Jean Blake | 6 | Daughter | — | Iowa |
| 40 | Allen Blake | 4 | Son | — | Iowa |
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)