WA
William Armstrong — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Clair-County, Michigan
Our Model Tree links this William Armstrong across the 1930 and 1940 US Censuses in St.-Clair-County, Michigan (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 10-person household.
Age 11
b. ~1929
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Michigan |
| Surname | Armstrong |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Port Huron Twp. |
| 1935 Residence (County) | St. Clair |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Port Huron Twp |
| 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 William | Age | Birth yr |
|---|---|---|---|---|
| Ada Armstrong | Daughter | — | 9 | ~1931 |
| Mildred Armstrong | Daughter | — | 10 | ~1930 |
| Gloria Andrews | Daughter | — | 1 | ~1939 |
| Gilbert Andrews | Head | — | 34 | ~1906 |
| Thomas Andrews | Son | — | 6 | ~1934 |
| Lawrence Andrews | Son | — | 4 | ~1936 |
| Zarill Andrews | Son | — | 2 | ~1938 |
| William Armstrong | Son | — | 11 | ~1929 |
| Jerry Andrews | Son | — | ~1940 | |
| Pearl Andrews | Spouse | — | 28 | ~1912 |
Census Appearances
1930
St Clair, …
Son, age 1
St Clair, Michigan · implied b. ~1929 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | William F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
St.-Clair-County, Michigan
Son, age 11
St.-Clair-County, Michigan · implied b. ~1929 — 10 household members
| Surname | Armstrong |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Port Huron Twp. |
| 1935 Residence (County) | St. Clair |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 William Armstrong across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Armstrong
Son · 1940 · age 11 · b. ~1929 · Michigan
★ You are viewing this record
Sibling
Mildred Armstrong
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jerry Andrews
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Andrews
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Andrews
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ada Armstrong
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Zarill Andrews
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gloria Andrews
Sibling · 1940 · age 1
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 — St.-Clair-County, Michigan
Open full size
1940 US Federal Census — St.-Clair-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01816-00754)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Fenner | 4 | Son | — | Michigan |
| 2 | Barbara Fenner | 2 | Daughter | — | Michigan |
| 3 | Wilfred Wheatley | 26 | Head | Labor | Michigan |
| 4 | Mary Wheatley | 23 | Wife | — | Michigan |
| 5 | Wilfred Jr. Wheatley | 5 | Son | — | Michigan |
| 6 | Albert Wheatley | 3 | Son | — | Michigan |
| 7 | Janet Wheatley | 1 | Daughter | — | Michigan |
| 8 | — | None | — | — | — |
| 9 | Francis Easton | 44 | Head | Labor | Michigan |
| 10 | Edward Easton | 22 | Son | Farm | Michigan |
| 11 | Mary Easton | 20 | Daughter | — | Michigan |
| 12 | Ann Clara Easton | 15 | Daughter | — | Michigan |
| 13 | Gilbert Andrews | 34 | Head | Farmer | Michigan |
| 14 | Pearl Andrews | 28 | Wife | — | Michigan |
| 15 | William Armstrong THIS PERSON | 11 | Son | — | Michigan |
| 16 | Mildred Armstrong | 10 | Daughter | — | Michigan |
| 17 | Ada Jane Armstrong | 9 | Daughter | — | Michigan |
| 18 | Thomas Andrews | 6 | Son | — | Michigan |
| 19 | Lawrence Andrews | 4 | Son | — | Michigan |
| 20 | Zarill Andrews | 2 | Son | — | Michigan |
| 21 | Gloria Andrews | 1 | Daughter | — | Michigan |
| 22 | Jerry Andrews | 0 | Son | — | Michigan |
| 23 | Frank Sr. Socha | 77 | Head | Farmer | Germany |
| 24 | Albert Socha | 33 | Son | Labor | Michigan |
| 25 | Bertha Socha | 39 | Wife | — | Germany |
| 26 | Albert Socha | 7 | Son | — | Michigan |
| 27 | Frank Jr. Socha | 39 | Head | Police | Michigan |
| 28 | Edna Socha | 33 | Wife | — | Michigan |
| 29 | Donna D. Socha | 13 | Daughter | — | Michigan |
| 30 | Frank 3 Socha | 8 | Son | — | Michigan |
| 31 | David Socha | 5 | Son | — | Michigan |
| 32 | Paul Andrews | 67 | Head | Teamster | Michigan |
| 33 | Aaron Andrews | 24 | Son | Labor | Michigan |
| 34 | Lewis Andrews | 21 | Son | Labor | Michigan |
| 35 | William B. Helps | 50 | Head | — | Canada |
| 36 | Isabell Helps | 48 | Wife | — | Scotland |
| 37 | George Edwards | 60 | Helper | Labor | Canada |
| 38 | Ethel Edwards | 53 | Wife | — | Canada |
| 39 | Gertrude Edwards | 22 | Daughter | Office Clerk | Canada |
| 40 | John Danielson | 67 | Head | Farm | Sweden |
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)