WA
William Armstrong — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this William Armstrong across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents William & William — first a head (b.~1910), then head of a 4-person household.
Age 30
b. ~1910
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Armstrong |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Chelsea City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Chauffeur |
| Industry | Navy Yard |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 664 |
| Highest Grade | H-2 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Chauffeur |
| Township / Ward | Chelsea City |
| Est. Birth Year | ~1910 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Joan Armstrong | Daughter | — | 2 | ~1938 |
| William Armstrong | Head | — | 30 | ~1910 |
| William Armstrong | Son | — | 1 | ~1939 |
| Mary Armstrong | Spouse | — | 28 | ~1912 |
Census Appearances
1920
Suffolk, Massachusetts
Son, age 10
Suffolk, Massachusetts · implied b. ~1910 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Maine |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Son, age 20
Suffolk, Massachusetts · implied b. ~1910 — 8 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 | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Maine |
| Occupation | Plumber |
| Industry | House Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Head, age 30
Suffolk-County, Massachusetts · implied b. ~1910 — 4 household members
| Surname | Armstrong |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Chelsea City |
| 1935 Residence (County) | Suffolk |
| Occupation | Chauffeur |
| Industry | Navy Yard |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 664 |
| Highest Grade | H-2 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Armstrong (~0.92 confidence) and father William Armstrong (~0.92 confidence) and mother Lettie Armstrong (~0.92 confidence) and mother Hattie Armstrong (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Armstrong
b. ~1879
Source father
● Household
· direct · ~0.92
Father
William Armstrong
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Lettie Armstrong
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Hattie Armstrong
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Armstrong
Head · 1940 · age 30 · b. ~1910 · Massachusetts
★ 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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01642-00053)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Armstrong THIS PERSON | 30 | Head | Chauffeur | Massachusetts |
| 42 | Mary Armstrong | 28 | Wife | — | Massachusetts |
| 43 | Joan Armstrong | 2 | Daughter | — | Massachusetts |
| 44 | William Armstrong | 1 | Son | — | Massachusetts |
| 45 | Isaac Levine | 37 | Head | Salesman | Russia |
| 46 | Ida Levine | 35 | Wife | — | Russia |
| 47 | Estelle Levine | 13 | Daughter | — | Massachusetts |
| 48 | Arnold Levine | 9 | Son | — | Massachusetts |
| 49 | Joseph Calamita | 23 | Head | Truck Driver | Massachusetts |
| 50 | Mildred Calamita | 24 | Wife | — | Massachusetts |
| 51 | Patricia Calamita | 2 | Daughter | — | Massachusetts |
| 52 | Pasquale Calamita | 72 | Father | — | Italy |
| 53 | Theresa Calamita | 63 | Mother | — | Italy |
| 54 | Julius Camelio | 26 | Wife | — | Pennsylvania |
| 55 | Maurice Camelio | 32 | Head | Boiler Maker | Ohio |
| 56 | Janet Camelio | 8 | Daughter | — | Ohio |
| 57 | Irene Camelio | 6 | Daughter | — | Ohio |
| 58 | Maurice Camelio | 4 | Son | — | Ohio |
| 59 | Alice Camelio | 2 | Daughter | — | Ohio |
| 60 | Jacob Liss | 33 | Head | Salesman | Massachusetts |
| 61 | Ethel Liss | 30 | Wife | — | Massachusetts |
| 62 | Sidney Liss | 1 | Son | — | Massachusetts |
| 63 | James B. Jackson | 52 | Head | — | Massachusetts |
| 64 | Annie Jackson | 41 | Wife | — | Ireland |
| 65 | Anna Jackson | 19 | Daughter | — | Massachusetts |
| 66 | Catherine Jackson | 17 | Daughter | Sales Clerk | Massachusetts |
| 67 | James Jackson | 11 | Son | — | Massachusetts |
| 68 | Mary F. Jackson | 6 | Daughter | — | Massachusetts |
| 69 | Michael Ashman | 42 | Head | — | Massachusetts |
| 70 | Mary Ashman | 42 | Wife | — | Eire |
| 71 | Edward Gray | 55 | Head | Stockroom | Massachusetts |
| 72 | Edith Gray | 55 | Wife | — | Massachusetts |
| 73 | Joseph Starr | 40 | Head | Laborer | Russia |
| 74 | Sophie Starr | 40 | Wife | — | Russia |
| 75 | Philip Starr | 17 | Son | — | Massachusetts |
| 76 | Gloria Starr | 14 | Daughter | — | Massachusetts |
| 77 | Jack Starr | 13 | Son | — | Massachusetts |
| 78 | Evelyn Starr | 11 | Daughter | — | Massachusetts |
| 79 | Laurence Starr | 9 | Son | — | Massachusetts |
| 80 | Selma Starr | 7 | Daughter | — | Massachusetts |
Pedigree Summary
William
Gen 1 · 4 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)