WD
William Donnelly — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this William Donnelly across the 1930 and 1940 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1914), then head of a 6-person household.
Age 16
b. ~1914
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Suffolk, Massachusetts |
| Surname | Donnelly |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Scotland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1914 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| William Donnelly | Son | — | 16 | ~1914 |
| Bernard Donnelly | Son | — | 20 | ~1910 |
| Ann Donnelly | Spouse | — | 44 | ~1886 |
| Annie Donnelly | Daughter | — | 23 | ~1907 |
| Patrick Donnelly | Head | — | 51 | ~1879 |
| Mary Donnelly | Daughter | — | 22 | ~1908 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 16
Suffolk, Massachusetts · implied b. ~1914 — 6 household members
| Surname | Donnelly |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Scotland |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Other, age 28
Suffolk-County, Massachusetts · implied b. ~1912 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dennelly |
| Given Name | William |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | BOSTON CITY |
| 1935 Residence (County) | SUFFOLK |
| Occupation | Bartender |
| Industry | Hotel Work |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 600 |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| 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 William Donnelly across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Donnelly
Son · 1930 · age 16 · b. ~1914 · Massachusetts
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Sibling
Annie Donnelly
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Donnelly
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Donnelly
Sibling · 1930 · age 22
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:massachusettscensus00reel953:0458)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Arthur Freeman | 38 | Head | Chauffeur | United States |
| 52 | Bertha Freeman | 38 | Wife | — | Norway |
| 53 | Coleman Connolly | 42 | Head | Watchman | Northern Ireland |
| 54 | Mary Connolly | 38 | Wife | — | Northern Ireland |
| 55 | Mary Connolly | 11 | Daughter | — | Massachusetts |
| 56 | Annie Connolly | 10 | Daughter | — | Massachusetts |
| 57 | Margaret Connolly | 8 | Daughter | — | Massachusetts |
| 58 | Eleanor Connolly | 7 | Daughter | — | Massachusetts |
| 59 | Theresa Connolly | 5 | Daughter | — | Massachusetts |
| 60 | Josephine Connolly | 3 | Daughter | — | Massachusetts |
| 61 | John Connolly | 2 | Son | — | Massachusetts |
| 62 | William Thompson | 37 | Head | Shipper | Massachusetts |
| 63 | Isabel Thompson | 40 | Wife | — | Massachusetts |
| 64 | Patrick Donnelly | 51 | Head | Houseman | Irish Free State |
| 65 | Ann Donnelly | 44 | Wife | — | Scotland |
| 66 | Mary Donnelly | 22 | Daughter | Stenographer | Scotland |
| 67 | Bernard Donnelly | 20 | Son | Clerk | Scotland |
| 68 | Annie Donnelly | 23 | Daughter | — | Massachusetts |
| 69 | William Donnelly THIS PERSON | 16 | Son | — | Massachusetts |
| 70 | Joseph Morgano | 35 | Head | Tailor | Italy |
| 71 | Philomena Morgano | 35 | Wife | — | Italy |
| 72 | Thomas Morgano | 13 | Son | — | Massachusetts |
| 73 | Joseph Morgano | 8 | Son | — | Massachusetts |
| 74 | John Petritti | 30 | Head | Officer | Massachusetts |
| 75 | Laura Petritti | 32 | Wife | — | Italy |
| 76 | John T. Petritti | 7 | Son | — | Massachusetts |
| 77 | Mary L. Petritti | 6 | Daughter | — | Massachusetts |
| 78 | Joseph Petritti | 4 | Son | — | Massachusetts |
| 79 | Hugh Rourke | 48 | Head | Clerk | Northern Ireland |
| 80 | Margaret Rourke | 48 | Wife | — | Northern Ireland |
| 81 | Thomas Rourke | 16 | Son | — | Massachusetts |
| 82 | Michael Dolan | 78 | Boarder | — | Northern Ireland |
| 83 | John Dolan | 46 | Boarder | Porter | Massachusetts |
| 84 | John Burns | 71 | Head | Supt. | Pennsylvania |
| 85 | Helen Burns | 38 | Wife | — | Pennsylvania |
| 86 | John Jr. Burns | 16 | Son | — | Massachusetts |
| 87 | Helen Burns | 14 | Daughter | — | Massachusetts |
| 88 | Robert Burns | 12 | Son | — | Massachusetts |
| 89 | Marie Burns | 5 | Daughter | — | Massachusetts |
| 90 | Paul Burns | 2 | Son | — | Massachusetts |
| 91 | Norah Morris | 55 | Head | Doctor | Northern Ireland |
| 92 | Bartholomew Morris | 41 | Head | Helper | Northern Ireland |
| 93 | Elizabeth Morris | 42 | Wife | — | Northern Ireland |
| 94 | John B. Morris | 13 | Son | — | Massachusetts |
| 95 | Mary Morris | 12 | Daughter | — | Massachusetts |
| 96 | Thomas J. Morris | 9 | Son | — | Massachusetts |
| 97 | Rita Morris | 7 | Daughter | — | Massachusetts |
| 98 | Cecelia Morris | 4 | Daughter | — | Massachusetts |
| 99 | Alfred Morris | 1 | Son | — | Massachusetts |
| 100 | Leland Figgins | 24 | Head | Engineer | Michigan |
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)