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William Harrington — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this William Harrington across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1918), then head of a 10-person household.
Age 22
b. ~1918
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Harrington |
| Given Name | William J. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | carpenter's helper |
| Industry | boat construction |
| Class of Worker | PW |
| Hours Worked | 26 |
| Income (1939) | 600 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Carpenter'S Helper |
| Township / Ward | Boston City |
| Est. Birth Year | ~1918 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Harrington | Son | — | 22 | ~1918 |
| Michael Harrington | Son | — | 28 | ~1912 |
| Henrietta Harrington | Daughter | — | 14 | ~1926 |
| Joseph Harrington | Son | — | 16 | ~1924 |
| Anna Harrington | Daughter | — | 18 | ~1922 |
| Mary Harrington | Daughter | — | 10 | ~1930 |
| Eileen Harrington | Daughter | — | 25 | ~1915 |
| James Harrington | Head | — | 61 | ~1879 |
| Anastasia Harrington | Spouse | — | 51 | ~1889 |
| Charles Mone | Other | — | 24 | ~1916 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 12
Suffolk, Massachusetts · implied b. ~1918 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrington |
| Given Name | William G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Canada-English |
| Mother's Birthplace | Canada-English |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 22
Suffolk-County, Massachusetts · implied b. ~1918 — 10 household members
| Surname | Harrington |
| Given Name | William J. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Occupation | carpenter's helper |
| Industry | boat construction |
| Class of Worker | PW |
| Hours Worked | 26 |
| Income (1939) | 600 |
| Highest Grade | Hs 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 Harrington across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Harrington
Son · 1940 · age 22 · b. ~1918 · Massachusetts
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Sibling
Henrietta Harrington
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Harrington
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eileen Harrington
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Harrington
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Harrington
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Harrington
Sibling · 1940 · age 28
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-t0627-01659-00091)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John A. Innis | 66 | head | Night Porter | Eng. Canada |
| 42 | Ellen T. Innis | 65 | wife | — | Eire |
| 43 | Elizabeth A. Bishop | 30 | daughter | — | Massachusetts |
| 44 | Virginia A. Bishop | 4 | granddau | — | Massachusetts |
| 45 | Michael Quilty | 54 | head | Laborer | Eire |
| 46 | Anna Quilty | 49 | wife | — | Eire |
| 47 | Honora Quilty | 11 | daughter | — | Massachusetts |
| 48 | James P. Harrington | 61 | head | Carpenter | Newfoundland |
| 49 | Anastasia Harrington | 51 | wife | — | Newfoundland |
| 50 | Michael D. Harrington | 28 | son | Chipper-Walker | Massachusetts |
| 51 | Eileen M. Harrington | 25 | daughter | Stamper | Massachusetts |
| 52 | William J. Harrington THIS PERSON | 22 | son | Carpenter'S Helper | Massachusetts |
| 53 | Anna M. Harrington | 18 | daughter | Packer | Massachusetts |
| 54 | Joseph D. Harrington | 16 | son | — | Massachusetts |
| 55 | Henrietta Harrington | 14 | daughter | — | Massachusetts |
| 56 | Mary Harrington | 10 | daughter | — | Massachusetts |
| 57 | Charles Mone | 24 | lodger | Rigger'S Helper | Massachusetts |
| 58 | Daniel J. Feeley | 53 | head | Laborer | Eire |
| 59 | Mary Feeley | 50 | wife | — | Eire |
| 60 | Margaret Feeley | 23 | daughter | Stenographer | Massachusetts |
| 61 | Mary E. Feeley | 18 | daughter | — | Massachusetts |
| 62 | James Feeley | 14 | son | — | Massachusetts |
| 63 | Patrick F. Shea | 48 | head | Boat Builder | Eire |
| 64 | Bridget Shea | 45 | wife | — | Eire |
| 65 | Margaret Shea | 15 | daughter | — | Massachusetts |
| 66 | Rita Shea | 12 | daughter | — | Massachusetts |
| 67 | Kathleen Shea | 9 | daughter | — | Massachusetts |
| 68 | Mark Connolly | 44 | head | Longshoreman | Eire |
| 69 | Bridget Connolly | 45 | wife | — | Eire |
| 70 | Mary Connolly | 16 | daughter | — | Massachusetts |
| 71 | Joseph Connolly | 15 | son | — | Massachusetts |
| 72 | James Connolly | 13 | son | — | Massachusetts |
| 73 | Mark Jr. Connolly | 10 | son | — | Massachusetts |
| 74 | Dennis Manning | 51 | head | Clerk | Eire |
| 75 | Catherine Manning | 45 | wife | — | Eire |
| 76 | Catherine Manning | 22 | daughter | Waitress | Massachusetts |
| 77 | Margaret Manning | 19 | daughter | — | Massachusetts |
| 78 | Mary Manning | 17 | daughter | — | Massachusetts |
| 79 | Helen Manning | 15 | daughter | — | Massachusetts |
| 80 | Dennis F. Manning | 13 | son | — | Massachusetts |
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)