WD
William Daly — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this William Daly across the 1910, 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents John & Mary — first a son (b.~1910), then head of a 3-person household.
Age 30
b. ~1910
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Daly |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Chauffeur |
| Industry | Livery |
| Class of Worker | PW |
| Hours Worked | 9 |
| Income (1939) | 325 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Chauffeur |
| Township / Ward | Boston 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Mary Daly | Head | — | 60 | ~1880 |
| Mary Daly | Daughter | — | 25 | ~1915 |
| William Daly | Son | — | 30 | ~1910 |
Census Appearances
1910
Chelsea, Massachusetts
Son, age 1
Chelsea, Massachusetts · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Daly |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Suffolk, Massachusetts
Son, age 10
Suffolk, Massachusetts · implied b. ~1910 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Daley |
| Given Name | William E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| 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 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Daley |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Seaman |
| Industry | Merchant Marine |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 30
Suffolk-County, Massachusetts · implied b. ~1910 — 3 household members
| Surname | Daly |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Chauffeur |
| Industry | Livery |
| Class of Worker | PW |
| Hours Worked | 9 |
| Income (1939) | 325 |
| Highest Grade | H-4 |
| 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 Daly across 4 US Census years (1910, 1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father John Daley (~0.92 confidence) and mother Mary Daly (~0.92 confidence) and mother Mary Daley (~0.92 confidence) and mother Rose Daley (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Daley
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Mary Daly
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Mary Daley
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Rose Daley
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Daly
Son · 1940 · age 30 · b. ~1910 · Massachusetts
★ You are viewing this record
Sibling
Mary Daly
Sibling · 1940 · age 25
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 — 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-t0627-01668-00243)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Thomas J. Volger | 65 | Head | — | New York |
| 42 | Mary J. Volger | 62 | Sister | — | New York |
| 43 | Noah Thorpe | 62 | Head | Metal Worker | England |
| 44 | Evelyn E. Thorpe | 57 | Wife | — | Pennsylvania |
| 45 | Mary E. O'Leary | 39 | Head | — | Massachusetts |
| 46 | Mary C. Daly | 60 | Head | — | Massachusetts |
| 47 | William Daly THIS PERSON | 30 | Son | Chauffeur | Massachusetts |
| 48 | Mary Daly | 25 | Daughter | Telephone Operator | Massachusetts |
| 49 | Dennis Callahan | 77 | Head | — | Ireland |
| 50 | Margaret Callahan | 35 | Daughter | Telephone Operator | Massachusetts |
| 51 | John J. Loughrey | 34 | Head | Meat Cutter | Massachusetts |
| 52 | Gertrude Loughrey | 29 | Wife | — | Massachusetts |
| 53 | John Loughrey | 10 | Son | — | Massachusetts |
| 54 | Gloria Loughrey | 8 | Daughter | — | Massachusetts |
| 55 | Julia Macdonald | 37 | Head | — | New York |
| 56 | Helen Macdonald | 20 | Daughter | Waitress | Massachusetts |
| 57 | William Macdonald | 19 | Son | Chauffeur | Massachusetts |
| 58 | Virginia Macdonald | 9 | Daughter | — | Massachusetts |
| 59 | Stanley Reid | 44 | Head | Bank Teller | Massachusetts |
| 60 | Margaret Reid | 40 | Wife | — | Massachusetts |
| 61 | Marjorie Reid | 21 | Daughter | New Worker | Massachusetts |
| 62 | Martin White | 31 | Head | Truck Driver | Massachusetts |
| 63 | Barbara White | 28 | Wife | — | Massachusetts |
| 64 | Martin White | 5 | Son | — | Massachusetts |
| 65 | Paul Yphantis | 30 | Head | Delivery Driver | Turkey |
| 66 | Despina Yphantis | 28 | Wife | — | Massachusetts |
| 67 | Marie Yphantis | 5 | Daughter | — | Massachusetts |
| 68 | George Fitzgerald | 31 | Head | Photo Engraver | Massachusetts |
| 69 | Catherine Fitzgerald | 27 | Wife | — | Massachusetts |
| 70 | Rita Fitzgerald | 0 | Daughter | — | Massachusetts |
| 71 | Martin Forkin | 52 | Head | Laborer | Ireland |
| 72 | Catherine Forkin | 49 | Wife | — | Ireland |
| 73 | Mary Forkin | 12 | Daughter | — | Massachusetts |
| 74 | Henry O'Kane | 56 | Head | Mail Clerk | Massachusetts |
| 75 | Henry Jr. O'Kane | 22 | Son | Temporary Mail Clerk | Massachusetts |
| 76 | John O'Kane | 20 | Son | Laborer | Massachusetts |
| 77 | Catherine O'Kane | 18 | Daughter | — | Massachusetts |
| 78 | Richard O'Kane | 16 | Son | — | Massachusetts |
| 79 | John Wilbur Alley | 58 | Head | Marine Engineer | Massachusetts |
| 80 | Abbie Cooper | 55 | Sister | — | Massachusetts |
Pedigree Summary
William + 1 sibling
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)