DS
Dorothy Sullivan — 1920 US Census Record
Model Tree available1920 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this Dorothy Sullivan across the 1910, 1920 and 1930 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed), with identified parents William & William — first a daughter (b.~1906), then head of a 10-person household.
Age 14
b. ~1906
Female
Daughter
Born: Massachusetts
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Suffolk, Massachusetts |
| Surname | Sullivan |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1906 |
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.
10 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Sullivan | Daughter | — | 14 | ~1906 |
| Margaret Sullivan | Spouse | — | 43 | ~1877 |
| William Sullivan | Head | — | 43 | ~1877 |
| John Sullivan | Son | — | 11 | ~1909 |
| Anna Sullivan | Daughter | — | 17 | ~1903 |
| Bridget Reardon | Other | — | 72 | ~1848 |
| Francis Sullivan | Son | — | 7 | ~1913 |
| Mary Sullivan | Daughter | — | 9 | ~1911 |
| Edward Sullivan | Son | — | 20 | ~1900 |
| Catherine Sullivan | Daughter | — | 13 | ~1907 |
Census Appearances
1910
Suffolk, Massachusetts
Daughter, age 6
Suffolk, Massachusetts · implied b. ~1904 — 13 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Suffolk, Massachusetts
Daughter, age 14
Suffolk, Massachusetts · implied b. ~1906 — 10 household members
| Surname | Sullivan |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| 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 24
Suffolk, Massachusetts · implied b. ~1906
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Sullivan |
| Given Name | Dorothea |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| 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 Dorothy Sullivan across 3 US Census years (1910, 1920 and 1930) in Suffolk, Massachusetts, using XGBoost record linkage. Identified parents: father William Sullivan (~0.92 confidence) and father William Sullivan (~0.92 confidence) and mother Margaret Sullivan (~0.92 confidence) and mother Margaret Sullivan (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Sullivan
b. ~1875
Source father
● Household
· direct · ~0.92
Father
William Sullivan
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Margaret Sullivan
b. ~1876
Source mother
● Household
· direct · ~0.92
Mother
Margaret Sullivan
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Dorothy Sullivan
Daughter · 1920 · age 14 · b. ~1906 · Massachusetts
★ You are viewing this record
Sibling
Edward Sullivan
Sibling · 1920 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Sullivan
Sibling · 1920 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Sullivan
Sibling · 1920 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Sullivan
Sibling · 1920 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Sullivan
Sibling · 1920 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Sullivan
Sibling · 1920 · age 9
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
1920 US Federal Census — Suffolk, Massachusetts
Open full size
1920 US Federal Census — Suffolk, Massachusetts
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu731unit:0267)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | William Green | 36 | Head | Puller | Maine |
| 52 | Celia Green | 34 | Wife | — | California |
| 53 | Charles Green | 11 | Son | — | Massachusetts |
| 54 | Clare Green | 7 | Daughter | — | Massachusetts |
| 55 | Mildred Green | 2 | Daughter | — | Massachusetts |
| 56 | Helen Joseph | 28 | Head | Operator | Syria |
| 57 | Lizzie Joseph | 7 | Daughter | — | Massachusetts |
| 58 | Thomas Mccarthy | 45 | Lodger | Shipper | Massachusetts |
| 59 | Fred Brinnan | 47 | Lodger | Laborer | Massachusetts |
| 60 | Austin Reardon | 44 | Lodger | Baker | Massachusetts |
| 61 | William Mulligan | 43 | Lodger | Laborer | Massachusetts |
| 62 | Annie Mulligan | 40 | Lodger | — | Massachusetts |
| 63 | Mary Kannan | 40 | Head | Wool Picker | Syria |
| 64 | Helen Kannan | 28 | Wife | — | Syria |
| 65 | George Kannan | 12 | Son | — | Syria |
| 66 | Rose Kannan | 5 | Daughter | — | Massachusetts |
| 67 | Salvador Kannan | 3 | Daughter | — | Massachusetts |
| 68 | Katherine Mousa | 40 | Head | — | Syria |
| 69 | Joseph Mousa | 19 | Son | Operator | Massachusetts |
| 70 | William Mousa | 14 | Son | — | Massachusetts |
| 71 | William Sullivan | 43 | Head | Deputy Collector | Massachusetts |
| 72 | Margaret Sullivan | 43 | Wife | Chauffeur | Massachusetts |
| 73 | Edward Sullivan | 20 | Son | Bookkeeper | Massachusetts |
| 74 | Anna Sullivan | 17 | Daughter | Packer | Massachusetts |
| 75 | Dorothy Sullivan THIS PERSON | 14 | Daughter | — | Massachusetts |
| 76 | Catherine Sullivan | 13 | Daughter | — | Massachusetts |
| 77 | John Sullivan | 11 | Son | — | Massachusetts |
| 78 | Mary Sullivan | 9 | Daughter | — | Massachusetts |
| 79 | Francis Sullivan | 7 | Son | — | Massachusetts |
| 80 | Bridget Reardon | 72 | Mother-in-law | — | Massachusetts |
| 81 | John Michaelides | 35 | Head | Machinist | Turkey |
| 82 | Mary Michaelides | 34 | Wife | — | Turkey |
| 83 | Nicholas Michaelides | 12 | Son | — | Turkey |
| 84 | Catherine Michaelides | 4 | Son | — | Massachusetts |
| 85 | Olga Michaelides | 1 | Daughter | — | Turkey |
| 86 | William Gourvalone | 35 | Head | Peddler | Greece |
| 87 | Machalila Gourvalone | 26 | Wife | — | Greece |
| 88 | John Gourvalone | 3 | Son | — | Massachusetts |
| 89 | Apostolos Gourvalone | 1 | Son | — | Massachusetts |
| 90 | Anthony De Lorgone | 48 | Head | Painter | Italy |
| 91 | Antoinette De Lorgone | 37 | Wife | — | Italy |
| 92 | Anna De Lorgone | 12 | Daughter | — | Italy |
| 93 | John De Lorgone | 11 | Son | — | Italy |
| 94 | Patrick Landers | 54 | Head | Keeper | Ireland |
| 95 | Helen Landers | 46 | Wife | — | Ireland |
| 96 | William Landers | 29 | Son | Machinist | Massachusetts |
| 97 | John Fahey | 47 | Lodger | Hostler | Ireland |
| 98 | James Cunneen | 50 | Lodger | Engineer | Massachusetts |
| 99 | William Sullivan | 28 | Lodger | Shipper | Ireland |
| 100 | Rachel Kane | 24 | Nephew | Electrician | Maine |
Pedigree Summary
Dorothy + 6 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)