TS
Timothy Sullivan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Timothy Sullivan across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1876), then head of a 7-person household.
Age 64
b. ~1876
Male
Spouse
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Sullivan |
| Given Name | Timothy |
| Relationship to Head | Husband |
| Sex | M |
| Color / Race | White |
| Age | 64 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Lowell City |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | First papers filed |
| Additional Details | |
| Occupation | Stationary Fireman |
| Industry | Cotton Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1300 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Stationary Fireman |
| Township / Ward | Lowell City |
| Est. Birth Year | ~1876 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Timothy | Age | Birth yr |
|---|---|---|---|---|
| Margaret Sullivan | Daughter | — | 24 | ~1916 |
| Dorothy Sullivan | Daughter | — | 18 | ~1922 |
| Annie Sullivan | Head | — | 59 | ~1881 |
| Edward Sullivan | Son | — | 20 | ~1920 |
| William Sullivan | Son | — | 16 | ~1924 |
| John Sullivan | Son | — | 39 | ~1901 |
| Timothy Sullivan | Spouse | — | 64 | ~1876 |
Census Appearances
1920
Suffolk, Massachusetts
Other, age 42
Suffolk, Massachusetts · implied b. ~1878 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Timothy J. |
| Relationship to Head | Brother |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Single |
| Birthplace | Ireland |
| Year of Immigration | 1887 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Plumber |
| Industry | Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Suffolk, Massachusetts
Other, age 53
Suffolk, Massachusetts · implied b. ~1877 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Timothy |
| Relationship to Head | Brother |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Single |
| Birthplace | Ireland |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Plumber |
| Industry | Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Middlesex-County, Massachusetts
Spouse, age 64
Middlesex-County, Massachusetts · implied b. ~1876 — 7 household members
| Surname | Sullivan |
| Given Name | Timothy |
| Relationship to Head | Husband |
| Sex | M |
| Color / Race | White |
| Age | 64 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Lowell City |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | First papers filed |
| Occupation | Stationary Fireman |
| Industry | Cotton Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1300 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Timothy Sullivan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Timothy Sullivan
Spouse · 1940 · age 64 · b. ~1876 · Massachusetts
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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-t0627-01691-00091)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bessie E. Mcfadgen | 45 | Daughter | Proof Reader | Mass |
| 42 | Donald R. Mcfadgen | 40 | Son | Patternmaker | Mass |
| 43 | John A. Mcfadgen | 21 | Son | None | New York |
| 44 | John J. Sullivan | 58 | Head | Chauffeur | Ireland |
| 45 | Margaret A. Sullivan | 57 | Wife | None | Rhode Island |
| 46 | Mary Sullivan | 27 | Daughter | School Teacher | New York |
| 47 | Helen Sullivan | 25 | Daughter | School Teacher | Mass |
| 48 | John J. Jr. Sullivan | 22 | Son | Salesclerk | Mass |
| 49 | Margaret Sullivan | 20 | Daughter | Clerk Typist | Mass |
| 50 | William Sullivan | 18 | Son | None | Mass |
| 51 | Mary Marr | 53 | Head | None | Mass |
| 52 | Leonard E. Marr | 30 | Son | Elevator Op | Mass |
| 53 | George League | 33 | Lodger | Counterman | Mass |
| 54 | Thomas D. Carden | 48 | Lodger | Laborer | Mass |
| 55 | Hazel Crowley | 37 | Lodger | Bookkeeper | Mass |
| 56 | Walter Burke | 30 | Lodger | Chauffeur | Mass |
| 57 | Annie Sullivan | 59 | Head | None | England |
| 58 | Timothy Sullivan THIS PERSON | 64 | Husband | Stationary Fireman | Ireland |
| 59 | John Sullivan | 39 | Son | Laborer | England |
| 60 | Margaret Sullivan | 24 | Daughter | Drawer In | Mass |
| 61 | Edward Sullivan | 20 | Son | — | Mass |
| 62 | Dorothy Sullivan | 18 | Daughter | None | Mass |
| 63 | William Sullivan | 16 | Son | None | Mass |
| 64 | James Macmillan | 60 | Head | Bricklayer | Scotland |
| 65 | Catherine Macmillan | 60 | Wife | None | Wales |
| 66 | William Morse | 42 | Head | Tinsmith | England |
| 67 | Mary Morse | 39 | Wife | None | England |
| 68 | Ellen Morse | 13 | Daughter | None | Mass |
| 69 | Maria Murtagh | 50 | Head | Housekeeper | England |
| 70 | Michael J. Gibbons | 45 | Head | Painter | Mass |
| 71 | Alice Gibbons | 45 | Wife | None | Mass |
| 72 | Loraine Gibbons | 15 | Daughter | None | Mass |
| 73 | Dorothy Gibbons | 14 | Daughter | None | Mass |
| 74 | Annie Maccarron | 53 | Head | High School Teacher | Mass |
| 75 | William H. Maccarron | 65 | Brother | None | Mass |
| 76 | William E. Curran | 59 | Head | Mason Tender | Mass |
| 77 | Ellen W. Curran | 69 | Wife | None | Ireland |
| 78 | Mary Jarrett | 68 | Head | None | Ireland |
| 79 | Mary Jarrett | 36 | Daughter | Clerk | Mass |
| 80 | John Jarrett | 33 | Son | Laborer | Mass |
Related Census Records
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)