FS
Francis Sullivan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Francis Sullivan across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 16-person household.
Age 17
b. ~1923
Male
Son
Born: Mass
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Sullivan |
| Given Name | Francis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Mass |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Odd Jobs |
| Industry | Camp |
| Class of Worker | PW |
| Income (1939) | 156 |
| Highest Grade | No H-2 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | mass |
| Occupation | Odd Jobs |
| Township / Ward | Boston City |
| Est. Birth Year | ~1923 |
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.
16 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Francis | Age | Birth yr |
|---|---|---|---|---|
| Catherine Sullivan | Daughter | — | 23 | ~1917 |
| Richard Sullivan | Son | — | 6 | ~1934 |
| Mary Sullivan | Spouse | — | 42 | ~1898 |
| Ethel Sullivan | Daughter | — | 13 | ~1927 |
| Marietta Sullivan | Daughter | — | 3 | ~1937 |
| Helen Sullivan | Daughter | — | 11 | ~1929 |
| Francis Sullivan | Son | — | 17 | ~1923 |
| Janet Sullivan | Daughter | — | 2 | ~1938 |
| Ann Sullivan | Daughter | — | 9 | ~1931 |
| Martin Waldron | Other | — | 19 | ~1921 |
| Thomas Sullivan | Head | — | 48 | ~1892 |
| Jeremiah Sullivan | Son | — | 7 | ~1933 |
| Lois Sullivan | Daughter | — | 15 | ~1925 |
| Barbara Sullivan | Daughter | — | 20 | ~1920 |
| William Sullivan | Son | — | 8 | ~1932 |
| Virginia Waldron | Daughter | — | 19 | ~1921 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 7
Suffolk, Massachusetts · implied b. ~1923 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Francis J |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Mass |
| Father's Birthplace | Mass |
| Mother's Birthplace | Mass |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | mass |
1940
Suffolk-County, Massachusetts
Son, age 17
Suffolk-County, Massachusetts · implied b. ~1923 — 16 household members
| Surname | Sullivan |
| Given Name | Francis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Mass |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Odd Jobs |
| Industry | Camp |
| Class of Worker | PW |
| Income (1939) | 156 |
| Highest Grade | No H-2 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | mass |
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 Francis Sullivan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Francis Sullivan
Son · 1940 · age 17 · b. ~1923 · Massachusetts
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Sibling
Lois Sullivan
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ethel Sullivan
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Waldron
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Sullivan
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Janet Sullivan
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Sullivan
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jeremiah Sullivan
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Sullivan
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ann Sullivan
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marietta Sullivan
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Sullivan
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Sullivan
Sibling · 1940 · age 23
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-t0627-01665-00628)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lincoln Benson | 34 | Son | Laundry Worker | Massachusetts |
| 2 | Martha Benson | 26 | daughter | Marker | Mass |
| 3 | Robert Benson | 20 | Son | Grader | Mass |
| 4 | Helen Benson | 19 | daughter | Custodess | Mass |
| 5 | Joseph Mc Grath | 54 | Brother | Laborer | Mass |
| 6 | William Russell | 36 | Head | Longshoreman | Mass |
| 7 | Helen Russell | 36 | Wife | Scrubwoman | Mass |
| 8 | Phyllis Russell | 14 | daughter | — | Mass |
| 9 | Gloria Russell | 13 | daughter | — | Mass |
| 10 | William Russell | 5 | Son | — | Mass |
| 11 | Anne Cassidy | 35 | Sister | Waitress | Mass |
| 12 | Helen Cassidy | 16 | Niece | — | Mass |
| 13 | James Haggerty | 39 | Brother | Ammunition Worker | Mass |
| 14 | Joseph Daniszewski | 60 | Head | Pressman | Poland |
| 15 | Love Daniszewski | 54 | Wife | — | Poland |
| 16 | Stanley Daniszewski | 25 | Son | Radio Service | Massachusetts |
| 17 | Joseph Daniszewski | 22 | Son | Presser | Mass |
| 18 | Louise Daniszewski | 19 | daughter | Examiner | Mass |
| 19 | Helen Daniszewski | 15 | daughter | — | Mass |
| 20 | Charles Leschiaski | 32 | Head | Laborer | Mass |
| 21 | Paulina Leschiaski | 30 | Wife | — | Mass |
| 22 | Irene Leschiaski | 3 | daughter | — | Mass |
| 23 | Thomas Sullivan | 48 | Head | Shipper | Massachusetts |
| 24 | Mary Sullivan | 42 | Wife | — | Massachusetts |
| 25 | Catherine Sullivan | 23 | daughter | Cigarette Girl | Mass |
| 26 | Barbara Sullivan | 20 | daughter | Waitress | Mass |
| 27 | Francis Sullivan THIS PERSON | 17 | Son | Odd Jobs | Mass |
| 28 | Lois Sullivan | 15 | daughter | — | Mass |
| 29 | Ethel Sullivan | 13 | daughter | — | Mass |
| 30 | Helen Sullivan | 11 | daughter | — | New Hampshire |
| 31 | Ann Sullivan | 9 | daughter | — | Massachusetts |
| 32 | William Sullivan | 8 | Son | — | Mass |
| 33 | Jeremiah Sullivan | 7 | Son | — | Mass |
| 34 | Richard Sullivan | 6 | Son | — | Mass |
| 35 | Marietta Sullivan | 3 | daughter | — | Mass |
| 36 | Janet Sullivan | 2 | daughter | — | Mass |
| 37 | Martin Waldron | 19 | Son-in-law | Attendant Gas Station | Mass |
| 38 | Virginia Waldron | 19 | Daughter | — | Mass |
| 39 | Adam Daniszewski | 57 | Head | Machinist | Poland |
| 40 | Blanche Daniszewski | 54 | Wife | — | Poland |
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)