HT
Harry Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Whatcom-County, Washington
Our Model Tree links this Harry Thompson across the 1920, 1930 and 1940 US Censuses in Whatcom-County, Washington (XGBoost, ~Confirmed), with identified parents Joseph & Fred — first a head (b.~1909), then head of a 4-person household.
Age 31
b. ~1909
Male
Head
Born: Washington
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Whatcom-County, Washington |
| Surname | Thompson |
| Given Name | Harry A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Washington |
| 1935 Residence (City) | Point Roberts Prec. |
| 1935 Residence (County) | Whatcom |
| Additional Details | |
| Occupation | Laborer |
| Industry | W.P.A. Road project |
| Class of Worker | GW |
| Hours Worked | 22 |
| Income (1939) | 800 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Laborer |
| Township / Ward | Point Roberts Prec |
| Est. Birth Year | ~1909 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Carol Thompson | Daughter | — | 1 | ~1939 |
| Agnes Thompson | Daughter | — | 3 | ~1937 |
| Harry Thompson | Head | — | 31 | ~1909 |
| Margaret Thompson | Spouse | — | 28 | ~1912 |
Census Appearances
1920
Whatcom, Washington
Son, age 11
Whatcom, Washington · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Hans |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Danish |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
Whatcom, Washington
Son, age 21
Whatcom, Washington · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Harry S. Ab |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Capt. of Boat |
| Industry | Fish Industry |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
Whatcom-County, Washington
Head, age 31
Whatcom-County, Washington · implied b. ~1909 — 4 household members
| Surname | Thompson |
| Given Name | Harry A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Washington |
| 1935 Residence (City) | Point Roberts Prec. |
| 1935 Residence (County) | Whatcom |
| Occupation | Laborer |
| Industry | W.P.A. Road project |
| Class of Worker | GW |
| Hours Worked | 22 |
| Income (1939) | 800 |
| Highest Grade | No 8 |
| 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 Harry Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Joseph Thompson (~0.92 confidence) and father Fred Thompson (~0.92 confidence) and mother Anna Thompson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joseph Thompson
b. ~1877
Source father
● Household
· direct · ~0.92
Father
Fred Thompson
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Anna Thompson
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harry Thompson
Head · 1940 · age 31 · b. ~1909 · Washington
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Whatcom-County, Washington
Open full size
1940 US Federal Census — Whatcom-County, Washington
Page Contents
33 people indexed on this census page (nara:1940:m-t0627-04369-00715)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jakobina Johnson | 62 | Head | — | Iceland |
| 42 | John S Johnson | 46 | Son | — | North Dakota |
| 43 | Ellis V Johnson | 48 | Head | Farmer | Iceland |
| 44 | Sarah Johnson | 42 | Wife | — | North Dakota |
| 45 | Jack Johnson | 20 | Son | Laborer | Washington |
| 46 | Harry A Thompson THIS PERSON | 31 | Head | Laborer | Washington |
| 47 | Margaret E Thompson | 28 | Wife | — | Scotland |
| 48 | Agnes D Thompson | 3 | Daughter | — | Canada |
| 49 | Carol L Thompson | 1 | Daughter | — | Canada |
| 50 | Ludovic Van Coetsem | 38 | Head | Laborer | Canada-English |
| 51 | Ella Van Coetsem | 27 | Wife | — | Washington |
| 52 | Helen B Van Coetsem | 5 | Daughter | — | Canada |
| 53 | Janice L Van Coetsem | 2 | Daughter | — | Canada |
| 54 | Arthur T Thompson | 29 | Head | Carpenter | Washington |
| 55 | Nina M Thompson | 23 | Wife | — | Washington |
| 56 | George C Gibson | 5 | Step-son | — | Washington |
| 57 | Judith A Gibson | 3 | Step-dau | — | Washington |
| 58 | Jack W Paulp | 38 | Head | Laborer | Washington |
| 59 | Nora M Paulp | 27 | Wife | Cannery Worker | Washington |
| 60 | Lois J Paulp | 14 | Daughter | — | Washington |
| 61 | Phyllis A Paulp | 10 | Daughter | — | Washington |
| 62 | Anna M Thompson | 65 | Head | Farmer | Denmark |
| 63 | John C Baker | 40 | Head | Fisherman | North Dakota |
| 64 | Anne C Baker | 35 | Wife | — | Washington |
| 65 | Virginia E Baker | 14 | Daughter | — | Washington |
| 66 | Dorothy A Baker | 12 | Daughter | — | Canada |
| 67 | John C Baker | 10 | Son | — | Canada |
| 68 | Helgi Thorsteinson | 80 | Head | — | Iceland |
| 69 | Dagbjort Thorsteinson | 77 | Wife | — | Iceland |
| 70 | James E Mengier | 49 | Head | Fisherman | Canada-English |
| 71 | Edith Mengier | 38 | Wife | Saleslady | Canada-English |
| 72 | Reuben S Bartlett | 40 | Head | Fishing | Georgia |
| 73 | Elmer O Williams | 41 | Head | Fishing | Washington |
Pedigree Summary
Harry
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)