WC
William Carroll — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this William Carroll across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents William & William — first a son (b.~1915), then head of a 9-person household.
Age 25
b. ~1915
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Carroll |
| Given Name | William J Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Industry | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1915 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Carroll | Daughter | — | 19 | ~1921 |
| Ruth Carroll | Daughter | — | 16 | ~1924 |
| Ann Carroll | Daughter | — | 23 | ~1917 |
| William Carroll | Head | — | 57 | ~1883 |
| William Carroll | Son | — | 25 | ~1915 |
| Edward Carroll | Son | — | 14 | ~1926 |
| Francis Carroll | Son | — | 21 | ~1919 |
| Robert Carroll | Son | — | 9 | ~1931 |
| Ann Carroll | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Suffolk, Massachusetts
Son, age 3
Suffolk, Massachusetts · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Son, age 14
Suffolk, Massachusetts · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| 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
Suffolk-County, Massachusetts
Son, age 25
Suffolk-County, Massachusetts · implied b. ~1915 — 9 household members
| Surname | Carroll |
| Given Name | William J Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Industry | 0 |
| 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 Carroll across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Carroll (~0.92 confidence) and father William Carroll (~0.92 confidence) and father William Carroll (~0.92 confidence) and mother Ann Carroll (~0.92 confidence) and mother Catherine Carroll (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Carroll
b. ~1883
Source father
● Household
· direct · ~0.92
Father
William Carroll
b. ~1886
Source father
● Household
· direct · ~0.92
Father
William Carroll
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Ann Carroll
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Catherine Carroll
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Carroll
Son · 1940 · age 25 · b. ~1915 · Massachusetts
★ You are viewing this record
Sibling
Edward Carroll
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ann Carroll
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Carroll
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Carroll
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Carroll
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Carroll
Sibling · 1940 · age 9
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-t0627-01672-00067)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Annie Rosenthal | 54 | Head | — | Massachusetts |
| 2 | Irving Rosenthal | 25 | Son | Operator | Massachusetts |
| 3 | Murray Kalman | 29 | Son-in-law | Auto Mechanic | Massachusetts |
| 4 | Bertha Kalman | 26 | Daughter | — | Massachusetts |
| 5 | Audrey Kalman | 5 | Granddaughter | — | Massachusetts |
| 6 | Rose Gollis | 67 | Sister | — | England |
| 7 | Daniel Flavin | 44 | Head | Store Owner | Ireland |
| 8 | Ida Flavin | 44 | Wife | — | Russia |
| 9 | Leo Flavin | 23 | Son | Lawyer | Massachusetts |
| 10 | Lottie Flavin | 26 | Daughter | Clerical Work | Massachusetts |
| 11 | Herbert Flavin | 20 | Son | Clerical Work | Massachusetts |
| 12 | George W Quilty | 54 | Head | Custodian | Massachusetts |
| 13 | Ida Quilty | 46 | Wife | — | Massachusetts |
| 14 | Mary Quilty | 15 | Daughter | — | Massachusetts |
| 15 | Eleanor Quilty | 13 | Daughter | — | Massachusetts |
| 16 | George W Jr Quilty | 12 | Son | — | Massachusetts |
| 17 | Rose Brody | 50 | Head | — | Russia |
| 18 | Meyer Brody | 30 | Son | Lawyer | Massachusetts |
| 19 | Edith Brody | 23 | Daughter | Secretary | Massachusetts |
| 20 | Leo S Mcgrath | 47 | Head | Com'L Photographer | Massachusetts |
| 21 | Mildred Mcgrath | 40 | Wife | — | Massachusetts |
| 22 | Jean M Mcgrath | 16 | Daughter | — | Massachusetts |
| 23 | Ann Mcgrath | 12 | Daughter | — | Massachusetts |
| 24 | Donald Mcgrath | 11 | Son | — | Massachusetts |
| 25 | Joan Mcgrath | 4 | Daughter | — | Massachusetts |
| 26 | Nathan Goldberg | 45 | Head | Tire Knocker | Massachusetts |
| 27 | Helen Goldberg | 43 | Wife | — | Russia |
| 28 | Bernard Goldberg | 18 | Son | — | Massachusetts |
| 29 | Alan Goldberg | 15 | Son | — | Massachusetts |
| 30 | Herbert M Goldberg | 5 | Son | — | Massachusetts |
| 31 | Rose Chiten | 67 | Mother-in-law | — | Russia |
| 32 | William J Carroll | 57 | Head | Press Examiner | Massachusetts |
| 33 | Ann L Carroll | 49 | Wife | Messenger | Massachusetts |
| 34 | William J Jr Carroll THIS PERSON | 25 | Son | — | Massachusetts |
| 35 | Ann L Carroll | 23 | Daughter | — | Massachusetts |
| 36 | Francis X Carroll | 21 | Son | — | Massachusetts |
| 37 | Dorothy L Carroll | 19 | Daughter | — | Massachusetts |
| 38 | Edward J Carroll | 14 | Son | Stenographer | Massachusetts |
| 39 | Ruth M Carroll | 16 | Daughter | — | Massachusetts |
| 40 | Robert Leo Carroll | 9 | Son | — | Massachusetts |
Pedigree Summary
William + 6 siblings
Gen 1 · 5 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)