RS
Ruth Sullivan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Ruth Sullivan across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 7-person household.
Age 19
b. ~1921
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Sullivan |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden city |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | New worker |
| Class of Worker | PW |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | New Worker |
| Township / Ward | Malden City |
| Est. Birth Year | ~1921 |
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 Ruth | Age | Birth yr |
|---|---|---|---|---|
| Shirley Sullivan | Daughter | — | 11 | ~1929 |
| Robert Sullivan | Son | — | 16 | ~1924 |
| Mildred Sullivan | Daughter | — | 20 | ~1920 |
| Ruth Sullivan | Daughter | — | 19 | ~1921 |
| Timothy Sullivan | Head | — | 45 | ~1895 |
| Doris Sullivan | Daughter | — | 18 | ~1922 |
| Mildred Sullivan | Spouse | — | 45 | ~1895 |
Census Appearances
1930
Middlesex, Massachusetts
Daughter, age 8
Middlesex, Massachusetts · implied b. ~1922 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Vermont |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 19
Middlesex-County, Massachusetts · implied b. ~1921 — 7 household members
| Surname | Sullivan |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden city |
| 1935 Residence (County) | Middlesex |
| Occupation | New worker |
| Class of Worker | PW |
| Hours Worked | 0 |
| Income (1939) | 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 Ruth Sullivan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ruth Sullivan
Daughter · 1940 · age 19 · b. ~1921 · Massachusetts
★ You are viewing this record
Sibling
Shirley Sullivan
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Sullivan
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Sullivan
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Sullivan
Sibling · 1940 · age 16
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-t0627-01608-00407)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nelson Dorothy M. Cutch | 5 | Daughter | — | Massachusetts |
| 2 | Clements Hardy | 36 | Head | Fireman | Massachusetts |
| 3 | Ada H. Hardy | 34 | Wife | — | Massachusetts |
| 4 | Marilyn Hardy | 15 | Daughter | — | Massachusetts |
| 5 | Pauline Hardy | 13 | Daughter | — | Massachusetts |
| 6 | Robert Hardy | 9 | Son | — | Massachusetts |
| 7 | Beverly Hardy | 2 | Daughter | — | Massachusetts |
| 8 | Abner Farnum | 36 | Head | Patrol Officer | New Hampshire |
| 9 | Marion A. Farnum | 35 | Wife | — | Massachusetts |
| 10 | Barbara Farnum | 5 | Daughter | — | Massachusetts |
| 11 | Clements Hardy | 70 | Head | Office Clerk | Canada English |
| 12 | Frances E. Hardy | 66 | Wife | — | Massachusetts |
| 13 | Francis Shannon | 41 | Head | Production Manager | Massachusetts |
| 14 | Irene S. Shannon | 41 | Wife | — | Massachusetts |
| 15 | Robert Shannon | 17 | Son | — | New Hampshire |
| 16 | Harriet Shannon | 5 | Daughter | — | Massachusetts |
| 17 | Richard S. Murray | 50 | Head | Manager Owner | Canada English |
| 18 | Henrietta S. Murray | 49 | Wife | — | Nova Scotia |
| 19 | Florence S. Murray | 8 | Daughter | — | Massachusetts |
| 20 | S. Florence Jordan | 77 | Mother-in-law | — | West Virginia |
| 21 | Earl Brown | 44 | Head | Tailor | New Hampshire |
| 22 | Ruth Brown | 44 | Wife | — | Washington |
| 23 | Merrill Brown | 18 | Son | — | Massachusetts |
| 24 | Walter Brown | 16 | Son | — | Massachusetts |
| 25 | Doris Brown | 12 | Daughter | — | Massachusetts |
| 26 | Robert Brown | 20 | Son | Plumber | Massachusetts |
| 27 | Edith Brown | 22 | Daughter-in-law | — | Massachusetts |
| 28 | Timothy Sullivan | 45 | Head | Planner | Massachusetts |
| 29 | Mildred A. Sullivan | 45 | Wife | — | Massachusetts |
| 30 | Mildred Sullivan | 20 | Daughter | Clerk | Massachusetts |
| 31 | Ruth Sullivan THIS PERSON | 19 | Daughter | New Worker | Massachusetts |
| 32 | Doris Sullivan | 18 | Daughter | — | Massachusetts |
| 33 | Robert Sullivan | 16 | Son | — | Massachusetts |
| 34 | Shirley Sullivan | 11 | Daughter | — | Massachusetts |
| 35 | Samuel C. French | 57 | Head | Shipper | Massachusetts |
| 36 | Edna M. French | 53 | Wife | — | Canada English |
| 37 | Herbert L. French | 25 | Son | Laborer | Massachusetts |
| 38 | F. Morton French | 22 | Son | Shipper | Massachusetts |
| 39 | J. Clark French | 22 | Son | Shipper | Massachusetts |
| 40 | S. Douglas French | 14 | 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)