KS
Katherine Sullivan — 1930 US Census Record
Model Tree available1930 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this Katherine Sullivan across the 1910, 1920 and 1930 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed), with identified parents Frederick & Frederick — first a daughter (b.~1901), then head of a 4-person household.
Age 29
b. ~1901
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Suffolk, Massachusetts |
| Surname | Sullivan |
| Given Name | Katherine D. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | Stenographer |
| Industry | State House |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Stenographer |
| Township / Ward | Boston City |
| Est. Birth Year | ~1901 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Katherine | Age | Birth yr |
|---|---|---|---|---|
| Frederick Sullivan | Head | — | 53 | ~1877 |
| Katherine Sullivan | Daughter | — | 29 | ~1901 |
| Katherine Sullivan | Other | — | 53 | ~1877 |
| Francis Sullivan | Son | — | 30 | ~1900 |
Census Appearances
1910
Suffolk, Massachusetts
Daughter, age 9
Suffolk, Massachusetts · implied b. ~1901 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Suffolk, Massachusetts
Daughter, age 18
Suffolk, Massachusetts · implied b. ~1902 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Katherine E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Daughter, age 29
Suffolk, Massachusetts · implied b. ~1901 — 4 household members
| Surname | Sullivan |
| Given Name | Katherine D. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Stenographer |
| Industry | State House |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 Katherine Sullivan across 3 US Census years (1910, 1920 and 1930) in Suffolk, Massachusetts, using XGBoost record linkage. Identified parents: father Frederick Sullivan (~0.92 confidence) and father Frederick Sullivan (~0.92 confidence) and father John Sullivan (~0.92 confidence) and mother Katherine Sullivan (~0.92 confidence) and mother Mary Sullivan (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frederick Sullivan
b. ~1877
Source father
● Household
· direct · ~0.92
Father
Frederick Sullivan
b. ~1872
Source father
● Household
· direct · ~0.92
Father
John Sullivan
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Katherine Sullivan
b. ~1873
Source mother
● Household
· direct · ~0.92
Mother
Mary Sullivan
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Katherine Sullivan
Daughter · 1930 · age 29 · b. ~1901 · Massachusetts
★ You are viewing this record
Sibling
Francis Sullivan
Sibling · 1930 · age 30
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
1930 US Federal Census — Suffolk, Massachusetts
Open full size
1930 US Federal Census — Suffolk, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel950:0537)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Mildred Richmond | 8 | Daughter | — | Massachusetts |
| 52 | Thomas Mulvey | 33 | Head | Printer | Massachusetts |
| 53 | Ellen M. Mulvey | 44 | Sister | — | Massachusetts |
| 54 | Cornelius Mulvey | 46 | Brother | Laborer | Massachusetts |
| 55 | James Tully | 53 | Head | Police Officer | Massachusetts |
| 56 | William A. Tully | 20 | Son | Chauffeur | Massachusetts |
| 57 | Egan Tully | 59 | Brother-in-law | — | Massachusetts |
| 58 | Charles T. Price | 71 | Head | — | England |
| 59 | Harriet Price | 71 | Wife | — | England |
| 60 | Edith Price | 44 | Daughter | — | Massachusetts |
| 61 | Gertrude Price | 37 | Daughter | Forelady | Massachusetts |
| 62 | Charles L. Price | 16 | Son | — | Massachusetts |
| 63 | Clifford Porter | 22 | Head | Salesman | Maine |
| 64 | Lillian Porter | 21 | Wife | — | Maine |
| 65 | George Finnegan | 19 | Boarder | Printer | Massachusetts |
| 66 | Era Ferrara | 20 | Head | — | Maine |
| 67 | Fleming J. Jr. Ferrara | 0 | Nephew | — | Maine |
| 68 | Alice M. Fagan | 45 | Roomer | Operator | Massachusetts |
| 69 | Sarah J. Chase | 61 | Head | Demonstrator | Massachusetts |
| 70 | Russell Moore | 24 | Head | — | Massachusetts |
| 71 | Alice Moore | 20 | Wife | — | Massachusetts |
| 72 | Mary E. Murray | 47 | Head | Trained Nurse | Massachusetts |
| 73 | William Green | 24 | Roomer | Radio Advertising | North Carolina |
| 74 | Rose Gautier | 15 | Roomer | — | Massachusetts |
| 75 | Nellie Sullivan | 54 | Head | — | Massachusetts |
| 76 | Marion C. Sullivan | 38 | Wife-H | — | Massachusetts |
| 77 | Marion Sullivan | 5 | Daughter | — | Massachusetts |
| 78 | Agnes A. Higgins | 21 | Maid | — | Irish Free State |
| 79 | Frederick Sullivan | 53 | Head | Postal Clerk | Massachusetts |
| 80 | Katherine Sullivan | 53 | Wife-H | — | Massachusetts |
| 81 | Katherine D. Sullivan THIS PERSON | 29 | Daughter | Stenographer | Massachusetts |
| 82 | Francis A. Sullivan | 30 | Son | Civil Engineer | Massachusetts |
| 83 | Margaret A. Parker | 62 | Head-H | — | Massachusetts |
| 84 | Edmund Walsh | 25 | Roomer | Printer | Massachusetts |
| 85 | Alice Walsh | 50 | Roomer | Maid | Massachusetts |
| 86 | Charlie Wing | 40 | Head | Laundryman | China |
| 87 | Thomas P. Wilson | 62 | Head | Carpenter | Canada English |
| 88 | Julia A. Wilson | 43 | Wife-A | — | Canada English |
| 89 | William E. Wilson | 9 | Son | — | Canada English |
| 90 | Florence M. Wilson | 2 | Daughter | — | Massachusetts |
| 91 | Florence E. Watson | 55 | Head-H | Practical Nurse | Canada English |
| 92 | Robenia Ely | 64 | Head-H | Laundress | Massachusetts |
| 93 | Jacob Hauser | 32 | Head | — | Switzerland |
| 94 | Celia A. Hauser | 29 | Wife-H | — | Sweden |
| 95 | Esther Price | 58 | Head-H | — | Poland |
| 96 | Lottie Price | 32 | Daughter | Millinery | Massachusetts |
| 97 | Bessie Price | 30 | Daughter | Millinery | Massachusetts |
| 98 | Samuel Price | 23 | Son | Shipper | Massachusetts |
| 99 | Frances Anderson | 26 | Daughter | Bookkeeper | Massachusetts |
| 100 | Jenny Anderson | 9 | Daughter | — | Massachusetts |
Pedigree Summary
Katherine + 1 sibling
Gen 1 · 5 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)