WR
William Riley — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this William Riley across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents William & William — first a son (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Riley |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Everett City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Pin Boy |
| Industry | Bowling alley |
| Class of Worker | PW |
| Hours Worked | 4 |
| Income (1939) | 194 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Pin Boy |
| Township / Ward | Everett City |
| Est. Birth Year | ~1917 |
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 |
|---|---|---|---|---|
| Mary Riley | Daughter | — | 17 | ~1923 |
| James Riley | Head | — | 43 | ~1897 |
| William Riley | Son | — | 23 | ~1917 |
| John Riley | Son | — | 22 | ~1918 |
| James Riley | Son | — | 25 | ~1915 |
| Paul Riley | Son | — | 14 | ~1926 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age
Middlesex, Massachusetts · implied b. ~1920 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Riley |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 11
Middlesex, Massachusetts · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Riley |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 23
Middlesex-County, Massachusetts · implied b. ~1917 — 6 household members
| Surname | Riley |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Everett City |
| 1935 Residence (County) | Middlesex |
| Occupation | Pin Boy |
| Industry | Bowling alley |
| Class of Worker | PW |
| Hours Worked | 4 |
| Income (1939) | 194 |
| Highest Grade | 8 |
| 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 Riley across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Riley (~0.92 confidence) and father William Riley (~0.92 confidence) and mother Mary Riley (~0.92 confidence) and father James Riley (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Riley
b. ~1885
Source father
● Household
· direct · ~0.92
Father
William Riley
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Mary Riley
b. ~1893
Source mother
● Household
· direct · ~0.92
Father
James Riley
b. ~1897
Source father
● Household
· direct · ~0.92
This person
Anchor record
William Riley
Son · 1940 · age 23 · b. ~1917 · Massachusetts
★ You are viewing this record
Sibling
Mary Riley
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Riley
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Riley
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Riley
Sibling · 1940 · age 14
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 — 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-t0627-01605-00405)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas Mulloy | 34 | Head | Bank Teller | Massachusetts |
| 2 | Genevieve Q. Mulloy | 35 | Wife | — | Massachusetts |
| 3 | Thomas Jr. Mulloy | 10 | Son | — | Massachusetts |
| 4 | James Mulloy | 8 | Son | — | Massachusetts |
| 5 | Jane Mulloy | 5 | Daughter | — | Massachusetts |
| 6 | Jane E. Talbot | 70 | Head | — | Massachusetts |
| 7 | Gertrude Ferrer | 31 | Daughter | Registered Nurse | Massachusetts |
| 8 | Mary Talbot | 32 | Daughter | School Teacher | Massachusetts |
| 9 | Mary J. Ferrer | 3 | Daughter | — | Massachusetts |
| 10 | Charles Wharf | 63 | Head | — | Massachusetts |
| 11 | Meta Wharf | 50 | Wife | — | Canada |
| 12 | Mary Lyford | 82 | Sister-in-law | — | Canada |
| 13 | George Osham | 65 | Head | Rigger | English |
| 14 | Emily Osham | 64 | Wife | — | Canada |
| 15 | George E. M. Osham | 23 | Son | Machinist | Massachusetts |
| 16 | Frederick Doyle | 30 | Lodger | Janitor | Massachusetts |
| 17 | Agnes Morris | 43 | Lodger | Packer (Pastry) | England |
| 18 | May Emory | 63 | Head | Saleslady | Massachusetts |
| 19 | Ernest Richardson | 40 | Son-in-law | Laborer | New Hampshire |
| 20 | Mildred Richardson | 41 | Daughter | — | Massachusetts |
| 21 | Joanne Richardson | 2 | Granddaughter | — | Massachusetts |
| 22 | Ella Horton | 70 | Sister | — | Massachusetts |
| 23 | James Riley | 43 | Head | Laborer | Massachusetts |
| 24 | James Jr. Riley | 25 | Son | Stretcher | Massachusetts |
| 25 | William Riley THIS PERSON | 23 | Son | Pin Boy | Massachusetts |
| 26 | John Riley | 22 | Son | New Worker | Massachusetts |
| 27 | Mary Riley | 17 | Daughter | — | Massachusetts |
| 28 | Paul Riley | 14 | Son | — | Massachusetts |
| 29 | Mary W. Bradford | 71 | Head | — | Maine |
| 30 | Jane Flint | 70 | Head | — | England |
| 31 | Maude Bradford | 69 | Lodger | — | Maine |
| 32 | Olin Eldridge | 88 | Lodger | — | Massachusetts |
| 33 | Peter Contardo | 46 | Head | Laborer | Italy |
| 34 | Mary Contardo | 36 | Wife | — | Italy |
| 35 | Rose Contardo | 15 | Daughter | — | Massachusetts |
| 36 | Ella Contardo | 11 | Daughter | — | Massachusetts |
| 37 | Teresa Contardo | 3 | Daughter | — | Massachusetts |
| 38 | Mary Contardo | 0 | Daughter | — | Massachusetts |
| 39 | Emma Hadley | 77 | Head | — | West Indies |
| 40 | Alice M. Elgers | 67 | Head | — | Massachusetts |
Related Census Records
Pedigree Summary
William + 4 siblings
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)