DS
Daniel Sullivan — 1930 US Census Record
Model Tree available1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Daniel Sullivan across the 1910, 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed), with identified parents Dennis & Julia — first a head (b.~1885), then head of a 6-person household.
Age 45
b. ~1885
Male
Head
Born: Massachusetts
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Sullivan |
| Given Name | Daniel A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 23 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Clerk |
| Industry | Post Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 4000 |
| Radio Set | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Clerk |
| Township / Ward | Cambridge City |
| Est. Birth Year | ~1885 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Daniel | Age | Birth yr |
|---|---|---|---|---|
| John Sullivan | Daughter | — | 19 | ~1911 |
| Mary Sullivan | Daughter | — | 12 | ~1918 |
| Daniel Sullivan | Head | — | 45 | ~1885 |
| Melvin Sullivan | Son | — | 21 | ~1909 |
| James Sullivan | Son | — | 14 | ~1916 |
| Sophie Sullivan | Spouse | — | 43 | ~1887 |
Census Appearances
1910
Middlesex, Massachusetts
Son, age 25
Middlesex, Massachusetts · implied b. ~1885 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Daniel |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Fireman |
| Industry | Railroad |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Son, age 34
Middlesex, Massachusetts · implied b. ~1886 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Daniel |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Machinist |
| Industry | Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Head, age 45
Middlesex, Massachusetts · implied b. ~1885 — 6 household members
| Surname | Sullivan |
| Given Name | Daniel A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 23 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Clerk |
| Industry | Post Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 4000 |
| Radio Set | R |
| 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 Daniel Sullivan across 3 US Census years (1910, 1920 and 1930) in Middlesex, Massachusetts, using XGBoost record linkage. Identified parents: father Dennis Sullivan (~0.92 confidence) and mother Julia Sullivan (~0.92 confidence) and mother Margaret Sullivan (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Dennis Sullivan
b. ~1858
Source father
● Household
· direct · ~0.92
Mother
Julia Sullivan
b. ~1858
Source mother
● Household
· direct · ~0.92
Mother
Margaret Sullivan
b. ~1860
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Daniel Sullivan
Head · 1930 · age 45 · b. ~1885 · Massachusetts
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:15thcensuspopula917unit:0514)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Louis M Smith | 32 | Head | Painter | Canada French |
| 2 | Blanche Smith | 32 | Wife | — | Canada French |
| 3 | John Malley | 45 | Head | — | New York |
| 4 | Mary Malley | 40 | Wife | — | New York |
| 5 | James Malley | 15 | Son | Clerk | Massachusetts |
| 6 | Thomas Malley | 12 | Son | — | Massachusetts |
| 7 | Francis Malley | 7 | Son | — | Massachusetts |
| 8 | Arthur Sorey | 37 | Head | Tinsmith | Canada English |
| 9 | Bernadette Sorey | 35 | Wife | — | Canada French |
| 10 | Vera Sorey | 8 | Daughter | — | Massachusetts |
| 11 | Edwin L Morley | 64 | Head | — | Massachusetts |
| 12 | Gertrude A Morley | 60 | Wife | — | Massachusetts |
| 13 | Alice G Morley | 34 | Daughter | Clerk | Massachusetts |
| 14 | Julia E Morley | 26 | Daughter | Clerk | Massachusetts |
| 15 | Doris G Morley | 23 | Daughter | Stenographer | Massachusetts |
| 16 | Barbara A Morley | 21 | Daughter | Clerk | Massachusetts |
| 17 | Damien Le Blanc | 73 | Head | Carpenter | Canada French |
| 18 | Hermeline Le Blanc | 73 | Wife | — | Canada French |
| 19 | Amelia Le Blanc | 42 | Daughter | Clerk | Canada French |
| 20 | Aurele J Beliveau | 34 | Head | Foreman | Massachusetts |
| 21 | Beulah E Beliveau | 30 | Wife | — | Massachusetts |
| 22 | Ernest A Beliveau | 6 | Son | — | Massachusetts |
| 23 | Helen M Beliveau | 5 | Daughter | — | Massachusetts |
| 24 | Yvonne F Beliveau | 3 | Daughter | — | Massachusetts |
| 25 | Julia Lefebvre | 21 | Cousin | Stenographer | Massachusetts |
| 26 | Oliver J St. Amour | 32 | Head | Printer | Canada English |
| 27 | Lucille A St. Amour | 31 | Wife | — | New Hampshire |
| 28 | Sophie M St. Amour | 5 | Daughter | — | Massachusetts |
| 29 | Helen L St. Amour | 3 | Daughter | — | Massachusetts |
| 30 | Ameline Caron | 67 | Head | — | Canada French |
| 31 | Melanie E Caron | 35 | Daughter | Bookkeeper | Massachusetts |
| 32 | Leonel G Caron | 31 | Son | Clerk | Massachusetts |
| 33 | Arthur J A Caron | 27 | Son | Clerk | Massachusetts |
| 34 | Louis E Caron | 24 | Son | Electrician | Massachusetts |
| 35 | Daniel A Sullivan THIS PERSON | 45 | Head | Clerk | Massachusetts |
| 36 | Sophie Z Sullivan | 43 | Wife | — | Massachusetts |
| 37 | Melvin A L Sullivan | 21 | Son | Clerk | Massachusetts |
| 38 | John F Sullivan | 19 | Daughter | — | Massachusetts |
| 39 | James P Sullivan | 14 | Son | Mechanic | Massachusetts |
| 40 | Mary E Sullivan | 12 | Daughter | — | Massachusetts |
| 41 | Rudolph Twarog | 46 | Head | Laborer | Russia |
| 42 | Sophie Twarog | 36 | Wife | — | Poland |
| 43 | Joseph Twarog | 19 | Son | — | Massachusetts |
| 44 | Helen Twarog | 15 | Daughter | — | Massachusetts |
| 45 | Fred Twarog | 12 | Son | — | Massachusetts |
| 46 | Jennie Twarog | 7 | Daughter | — | Massachusetts |
| 47 | Edward Twarog | 5 | Son | — | Massachusetts |
| 48 | Lawrence Gagnon | 30 | Head | Operator | Massachusetts |
| 49 | Alice Gagnon | 28 | Wife | — | Massachusetts |
| 50 | Robert Gagnon | 1 | Son | — | Massachusetts |
Pedigree Summary
Daniel
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)