JB
James Brock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · King-County, Washington
Our Model Tree links this James Brock across the 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 6-person household.
Age 16
b. ~1924
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Brock |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle city |
| 1935 Residence (County) | King |
| Additional Details | |
| Industry | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1924 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Beverly Brock | Daughter | — | 7 | ~1933 |
| Irene Brock | Spouse | — | 42 | ~1898 |
| Robert Brock | Son | — | 12 | ~1928 |
| James Brock | Son | — | 16 | ~1924 |
| Morley Brock | Other | — | 34 | ~1906 |
| Norton Brock | Head | — | 43 | ~1897 |
Census Appearances
1930
King, Washington
Son, age 5
King, Washington · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brock |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | Russia |
| Can Read/Write | No |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Son, age 16
King-County, Washington · implied b. ~1924 — 6 household members
| Surname | Brock |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle city |
| 1935 Residence (County) | King |
| Industry | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
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 Brock across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Brock
Son · 1940 · age 16 · b. ~1924 · Washington
★ You are viewing this record
Sibling
Beverly Brock
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Brock
Sibling · 1940 · age 12
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 — King-County, Washington
Open full size
1940 US Federal Census — King-County, Washington
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-04375-00663)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ruby Fortner | 19 | daughter | Baker | Missouri |
| 42 | Norma Fortner | 17 | daughter | — | Missouri |
| 43 | David Fortner | 14 | son | — | Missouri |
| 44 | Howard Fortner | 12 | son | — | Missouri |
| 45 | Alice Fortner | 8 | daughter | — | Washington |
| 46 | Robert Castle | 1 | lodger | — | Washington |
| 47 | Clinton Reester | 37 | Head | Supervisor | Minnesota |
| 48 | Dora Reester | 28 | wife | — | Iowa |
| 49 | William Reester | 4 | son | — | Washington |
| 50 | Harold Mannon | 39 | Head | Salesman | Illinois |
| 51 | Alice Mannon | 39 | wife | — | Washington |
| 52 | Joseph D. Wothers | 64 | Head | — | England |
| 53 | Elizabeth Wothers | 62 | wife | Beautician | Minnesota |
| 54 | Harvey Hansen | 42 | Head | Repair Man | So. Dakota |
| 55 | Emily Hansen | 39 | wife | Repairwoman | Wisconsin |
| 56 | Harold Hansen | 16 | son | — | Wisconsin |
| 57 | Forrest Hansen | 9 | son | — | Washington |
| 58 | Gail Hansen | 7 | daughter | — | Washington |
| 59 | Fred G. Ables | 70 | Head | Painter | Iowa |
| 60 | Bertha Ables | 58 | wife | Stenographer | Ohio |
| 61 | Rachel Williams | 87 | mother | — | Iowa |
| 62 | Peter Vander Hoek | 33 | Head | Salesman | Holland |
| 63 | Ina Vander Hoek | 31 | wife | — | No. Dakota |
| 65 | William Shefendecker | 37 | Head | Maintenance | Kansas |
| 66 | Margaret Shefendecker | 40 | wife | — | Texas |
| 67 | Mary Jane Shefendecker | 12 | daughter | — | Ohio |
| 68 | Martha Shefendecker | 5 | daughter | — | Washington |
| 69 | Norton K. Brock | 43 | Head | Druggist | Washington |
| 70 | Irene Brock | 42 | wife | — | Washington |
| 71 | James Brock THIS PERSON | 16 | son | — | Washington |
| 72 | Robert Brock | 12 | son | — | Washington |
| 73 | Beverly Jean Brock | 7 | daughter | — | Washington |
| 74 | Morley Brock | 34 | brother | Electrical Eng | Washington |
| 75 | Archie Vernon | 30 | Head | Bicycle Mech. | Washington |
| 76 | Lucile Vernon | 31 | wife | — | Washington |
| 77 | Guy Vernon | 3 | son | — | Washington |
| 78 | James Mckay | 29 | Head | Metal Fitter | Washington |
| 79 | Rosa M. Mckay | 26 | wife | — | Washington |
| 80 | Barbara M. Mckay | 6 | daughter | — | Washington |
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)