WH
William Harrington — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this William Harrington across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents William & William — first a son (b.~1919), then head of a 8-person household.
Age 21
b. ~1919
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Harrington |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lynn City |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Occupation | Laborer |
| Industry | C.C.C. |
| Class of Worker | GW |
| Income (1939) | 988 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Laborer |
| Township / Ward | Lynn City |
| Est. Birth Year | ~1919 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Harrington | Head | — | 43 | ~1897 |
| Francis Harrington | Son | — | 19 | ~1921 |
| Mary Harrington | Spouse | — | 38 | ~1902 |
| William Harrington | Son | — | 21 | ~1919 |
| Mary Harrington | Daughter | — | 15 | ~1925 |
| Cornelius Harrington | Other | — | 68 | ~1872 |
| Walter Harrington | Son | — | 17 | ~1923 |
| Robert Linehan | Other | — | 16 | ~1924 |
Census Appearances
1920
Essex, Massachusetts
Son, age
Essex, Massachusetts · implied b. ~1920 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrington |
| 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
Essex, Massachusetts
Son, age 11
Essex, Massachusetts · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrington |
| Given Name | William J. |
| 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
Essex-County, Massachusetts
Son, age 21
Essex-County, Massachusetts · implied b. ~1919 — 8 household members
| Surname | Harrington |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lynn City |
| 1935 Residence (County) | Essex |
| Occupation | Laborer |
| Industry | C.C.C. |
| Class of Worker | GW |
| Income (1939) | 988 |
| 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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Harrington (~0.92 confidence) and father William Harrington (~0.92 confidence) and mother Mary Harrington (~0.92 confidence) and mother Mary Harrington (~0.92 confidence) and mother Mary Harrington (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Harrington
b. ~1897
Source father
● Household
· direct · ~0.92
Father
William Harrington
b. ~1897
Source father
● Household
· direct · ~0.92
Mother
Mary Harrington
b. ~1902
Source mother
● Household
· direct · ~0.92
Mother
Mary Harrington
b. ~1902
Source mother
● Household
· direct · ~0.92
Mother
Mary Harrington
b. ~1905
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Harrington
Son · 1940 · age 21 · b. ~1919 · Massachusetts
★ You are viewing this record
Sibling
Walter Harrington
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Harrington
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Harrington
Sibling · 1940 · age 19
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 — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01697-00443)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bruce Smith | 2 | Son | — | Massachusetts |
| 42 | Signe Thyberg | 47 | Head | Maid | Sweden |
| 43 | Ernest Thyberg | 19 | Son | Shoe Worker | Massachusetts |
| 44 | Clarence Thyberg | 17 | Son | — | Massachusetts |
| 45 | Herbert Thyberg | 11 | Son | — | Massachusetts |
| 46 | Helen Thyberg | 10 | Daughter | — | Massachusetts |
| 47 | James Mchugh | 42 | Head | Stationary Fireman | Eire |
| 48 | Julie Mchugh | 40 | Wife | — | Eire |
| 49 | Anselme Robichaud | 72 | Head | Shoe Worker | Canada French |
| 50 | Jane Robichaud | 72 | Wife | — | Canada English |
| 51 | Eleen M. Robichaud | 27 | Daughter | Teacher | Massachusetts |
| 52 | Guy Hodgman | 51 | Head | Carpenter | Maine |
| 53 | Mary Hodgman | 50 | Wife | — | Massachusetts |
| 54 | Frances Hodgman | 18 | Daughter | Clerk | Maine |
| 55 | Hazel Hodgman | 13 | Daughter | — | Massachusetts |
| 56 | Charles Hodgman | 12 | Son | — | Massachusetts |
| 57 | Wanelik Boleslaw | 52 | Head | Bartender | Poland |
| 58 | Rose M. Boleslaw | 48 | Wife | — | Poland |
| 59 | Marion Boleslaw | 27 | Daughter | Teacher | Massachusetts |
| 60 | Amelia Boleslaw | 20 | Daughter | Bender | Massachusetts |
| 61 | William Boleslaw | 18 | Son | Laborer | Massachusetts |
| 62 | Walter Boleslaw | 15 | Son | — | Massachusetts |
| 63 | Stanley Boleslaw | 13 | Son | — | Massachusetts |
| 64 | Mabel Frazier | 23 | Head | Teacher | Massachusetts |
| 65 | Emma Frazier | 55 | Wife | — | Massachusetts |
| 66 | Ruth Frazier | 16 | Daughter | — | Massachusetts |
| 67 | William Harrington | 43 | Head | Maintenance | Massachusetts |
| 68 | Mary Harrington | 38 | Wife | Waitress | Massachusetts |
| 69 | William Harrington THIS PERSON | 21 | Son | Laborer | Massachusetts |
| 70 | Francis Harrington | 19 | Son | Cook (Ccc) | Massachusetts |
| 71 | Walter G. Harrington | 17 | Son | — | Massachusetts |
| 72 | Mary C. Harrington | 15 | Daughter | — | Massachusetts |
| 73 | Cornelius Harrington | 68 | Father-in-law | — | Massachusetts |
| 74 | Robert Linehan | 16 | Cousin | — | Massachusetts |
| 75 | William Adams | 63 | Head | Foreman | Massachusetts |
| 76 | Lillian Adams | 57 | Wife | — | Massachusetts |
| 77 | Dorothy Adams | 26 | Daughter | Seamstress | Massachusetts |
| 78 | William E. Jr. Adams | 24 | Son | Usher | Massachusetts |
| 79 | Marjorie Adams | 20 | Daughter | Nursemaid | Massachusetts |
| 80 | Thomas P. Reynolds | 36 | Head | Checker | Massachusetts |
Pedigree Summary
William + 3 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)