CS
Cornelius Sullivan — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Cornelius Sullivan across the 1900, 1910, 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1863), then head of a 3-person household.
Age 67
b. ~1863
Male
Head
Born: Massachusetts
Widowed
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Sullivan |
| Given Name | Cornelius F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Widowed |
| Birthplace | Massachusetts |
| Age at First Marriage | 21 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Occupation | Agent-Ins. |
| Industry | Life Ins. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 60 |
| Radio Set | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Agent-Ins. |
| Township / Ward | City Of Lowell |
| Est. Birth Year | ~1863 |
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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Cornelius | Age | Birth yr |
|---|---|---|---|---|
| Frederick Sullivan | Son | — | 31 | ~1899 |
| Harriett Sullivan | Other | — | 28 | ~1902 |
| Cornelius Sullivan | Head | — | 67 | ~1863 |
Census Appearances
1900
Middlesex, Massachusetts
Head, age 37
Middlesex, Massachusetts · implied b. ~1863 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Cornelius |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Birth Month | Apr |
| Birth Year | 1863 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Write | Laborer |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1910
Middlesex, Massachusetts
Head, age 47
Middlesex, Massachusetts · implied b. ~1863 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Cornelius F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Years Married | 27 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Hairdresser |
| Industry | Barber Shop |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Head, age 57
Middlesex, Massachusetts · implied b. ~1863 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Cornelius J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Official |
| Industry | Lowell Jail |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Head, age 67
Middlesex, Massachusetts · implied b. ~1863 — 3 household members
| Surname | Sullivan |
| Given Name | Cornelius F |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 67 |
| Marital Status | Widowed |
| Birthplace | Massachusetts |
| Age at First Marriage | 21 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Agent-Ins. |
| Industry | Life Ins. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 60 |
| 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 Cornelius Sullivan across 4 US Census years (1900, 1910, 1920 and 1930) in Middlesex, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
Cornelius Sullivan
Head · 1930 · age 67 · b. ~1863 · Massachusetts
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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:massachusettscensus00reel920:0213)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Amey F Pepin | 25 | Wife-H | Spinner | Massachusetts |
| 2 | William H Pepin | 65 | Head | Butcher | Canada-French |
| 3 | Flora A Pepin | 60 | Wife-H | — | Canada-French |
| 4 | Mary C Stuart | 42 | Daughter | Maid | Canada-French |
| 5 | Elizabeth S Fox | 72 | Head | — | Massachusetts |
| 6 | Maria Murdock | 56 | Servant | Maid | Irish Free State |
| 7 | Prime A Rivet | 56 | Head | Chauffeur | Canada-French |
| 8 | Corie Rivet | 44 | Wife-H | — | Canada-French |
| 9 | Alice G Rivet | 23 | Daughter | Nurse | Massachusetts |
| 10 | Theodore J Rivet | 20 | Son | Helper | Massachusetts |
| 11 | Paul A Rivet | 17 | Son | Helper | Massachusetts |
| 12 | Celestina Brisson | 53 | Lodger | — | Canada-French |
| 13 | Edward F Donahue | 23 | Head | Chauffeur | Massachusetts |
| 14 | Veronica C Donahue | 25 | Wife-H | Operator | Massachusetts |
| 15 | Marie Giguere | 43 | Head-H | Weaver | Canada-French |
| 16 | Albert J Giguere | 19 | Son | Doffer | Massachusetts |
| 17 | Charlotte Mcdaniel | 52 | Head | — | Massachusetts |
| 18 | Rose M Mcdaniel | 52 | Sister | Proprietress | Massachusetts |
| 19 | Clara Taylor | 57 | Servant | Maid | Irish Free State |
| 20 | Rose M Wood | 42 | Head | — | Massachusetts |
| 21 | Julia B Fox | 51 | Head | — | Massachusetts |
| 22 | Mary E Fox | 50 | Sister | Manager | Massachusetts |
| 23 | Sarah B Byrne | 52 | Servant | Maid | Scotland |
| 24 | Addison Putnam | 76 | Head | — | Massachusetts |
| 25 | Caroline M Putnam | 70 | Wife-H | — | Virginia |
| 26 | Gustav M Burke | 33 | Head | Traffic Manager | Massachusetts |
| 27 | Aida M Burke | 31 | Wife-H | Clerk | Massachusetts |
| 28 | Ursula M Burke | 57 | Mother | — | Canada-English |
| 29 | Wallace X Lane | 43 | Head | Asst. Superintendent | Maine |
| 30 | Margaret D Lane | 29 | Wife-H | — | Massachusetts |
| 31 | Arthur E Jr. Jones | 32 | Head | Buyer | Illinois |
| 32 | Ruth Jones | 27 | Wife-H | — | New Jersey |
| 33 | Estelle R Jones | 3 | Daughter | — | Massachusetts |
| 34 | Leigh Desmarais | 50 | Head | Merchant | Canada-French |
| 35 | Margaret M Desmarais | 42 | Wife-H | — | Massachusetts |
| 36 | Lucy A Murray | 39 | Sister-in-law | Nurse-Trained | Massachusetts |
| 37 | Cornelius F Sullivan THIS PERSON | 67 | Head | Agent-Ins. | Massachusetts |
| 38 | Frederick A Sullivan | 31 | Son | Clerk | Massachusetts |
| 39 | Harriett S Sullivan | 28 | Daughter-in-law | Librarian | Massachusetts |
| 40 | Susan C Watson | 69 | Head | — | Massachusetts |
| 41 | James W Greene | 40 | Head | — | Maine |
| 42 | Gladys M Greene | 40 | Wife-H | Clerk | Massachusetts |
| 43 | Viola M Greene | 18 | Daughter | Operator | Massachusetts |
| 44 | George M Greene | 16 | Son | — | Massachusetts |
| 45 | James W Greene | 13 | Son | — | Massachusetts |
| 46 | James W Chase | 44 | Roomer | Salesman | Maine |
| 47 | Adam M Pratt | 63 | Head | — | Canada-English |
| 48 | Mary W Pratt | 53 | Wife-H | Author | Massachusetts |
| 49 | Charlotte Gifford | 43 | Roomer | Teacher | Connecticut |
| 50 | Grace Colby | 49 | Roomer | Stenographer | Massachusetts |
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)