WM
William Mccarthy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this William Mccarthy across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Charles & Helen — first a head (b.~1912), then head of a 6-person household.
Age 28
b. ~1912
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | McCarthy |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Everett City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Clerk |
| Industry | Warehouse |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1250 |
| Highest Grade | H-2 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Clerk |
| Township / Ward | Everett City |
| Est. Birth Year | ~1912 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Winifred Mccarthy | Daughter | — | 1 | ~1939 |
| William Mccarthy | Head | — | 28 | ~1912 |
| John Lynn | Other | — | 19 | ~1921 |
| George Lynn | Other | — | 51 | ~1889 |
| Etta Lynn | Other | — | 53 | ~1887 |
| Winifred Mccarthy | Spouse | — | 23 | ~1917 |
Census Appearances
Son, age 6
Middlesex, Massachusetts · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarty |
| Given Name | William |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 16
Middlesex, Massachusetts · implied b. ~1914 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Clerk |
| Industry | Underwear Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Head, age 28
Middlesex-County, Massachusetts · implied b. ~1912 — 6 household members
| Surname | McCarthy |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Everett City |
| 1935 Residence (County) | Middlesex |
| Occupation | Clerk |
| Industry | Warehouse |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1250 |
| 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 Mccarthy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Mccarthy (~0.92 confidence) and mother Helen Mccarty (~0.92 confidence) and father William Mccarty (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Mccarthy
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Helen Mccarty
b. ~1881
Source mother
● Household
· direct · ~0.92
Father
William Mccarty
b. ~1881
Source father
● Household
· direct · ~0.92
This person
Anchor record
William Mccarthy
Head · 1940 · age 28 · b. ~1912 · 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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01605-00491)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Mccarthy THIS PERSON | 28 | Head | Clerk | Massachusetts |
| 2 | Winifred D. Mccarthy | 23 | Wife | — | Massachusetts |
| 3 | Winifred D. Mccarthy | 1 | Daughter | — | Massachusetts |
| 4 | George Lynn | 51 | Father-in-law | Machinist | Massachusetts |
| 5 | Etta Lynn | 53 | Mother-in-law | Bench Worker | Massachusetts |
| 6 | John Lynn | 19 | Brother-in-law | Buffer | Massachusetts |
| 7 | William Aubrey | 50 | Head | Laborer | Massachusetts |
| 8 | Elizabeth Aubrey | 48 | Wife | — | Massachusetts |
| 9 | Doris Aubrey | 16 | Daughter | — | Massachusetts |
| 10 | Lorraine Aubrey | 11 | Daughter | — | Massachusetts |
| 11 | David Aubrey | 7 | Son | — | Massachusetts |
| 12 | Albert Aubrey | 23 | Son | Laborer | Massachusetts |
| 13 | Michael Connors | 60 | Head | Watchman | Ireland |
| 14 | Barbara Connors | 61 | Wife | — | Ireland |
| 15 | Mary Connors | 30 | Daughter | Clerk | Massachusetts |
| 16 | John Connors | 28 | Son | Clerk | Massachusetts |
| 17 | Mary A. Connors | 32 | Niece | — | Massachusetts |
| 18 | Michael Philbin | 52 | Head | Stationary Fireman | Ireland |
| 19 | Annie Philbin | 44 | Wife | — | Ireland |
| 20 | John Philbin | 21 | Son | — | Massachusetts |
| 21 | Margaret Philbin | 18 | Daughter | — | Massachusetts |
| 22 | Thomas Philbin | 13 | Son | — | Massachusetts |
| 23 | Joseph Bowen | 26 | Head | Refrigerator Mech | Massachusetts |
| 24 | Lillian Bowen | 24 | Wife | — | Massachusetts |
| 25 | Joseph Bowen | 1 | Son | — | Massachusetts |
| 26 | Delia J. Curley | 61 | Head | — | Ireland |
| 27 | Stephen Curley | 37 | Son | Business Man | Massachusetts |
| 28 | Alice B. Curley | 27 | Daughter | — | Massachusetts |
| 29 | Eileen Curley | 26 | Daughter | Stenographer | Massachusetts |
| 30 | Anne D. Curley | 21 | Daughter | Book Keeper | Massachusetts |
| 31 | James Bond | 45 | Head | Deputy Sealer | Massachusetts |
| 32 | Bernice Bond | 39 | Wife | — | New Hampshire |
| 33 | Bennett Richard Bond | 5 | Guest | — | Massachusetts |
| 34 | Thomas J. Bond | 38 | Head | Foreman | Massachusetts |
| 35 | Elizabeth Bond | 38 | Wife | — | Massachusetts |
| 36 | Thomas J. Jr. Bond | 6 | Son | — | Massachusetts |
| 37 | William Taylor | 45 | Head | Watchman | Massachusetts |
| 38 | Catherine Taylor | 41 | Wife | — | Massachusetts |
| 39 | Margaret Taylor | 17 | Daughter | — | Massachusetts |
| 40 | Patricia Taylor | 13 | Daughter | — | Massachusetts |
Related Census Records
Pedigree Summary
William
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)