JD
John Donnelly — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this John Donnelly across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 10-person household.
Age 18
b. ~1922
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Donnelly |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Laborer |
| Industry | Forestry |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 180 |
| Highest Grade | H-2 |
| 1935 Residence | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Laborer |
| Township / Ward | Boston City |
| Est. Birth Year | ~1922 |
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 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Catherine Donnelly | Daughter | — | 14 | ~1926 |
| Mary Donnelly | Daughter | — | 9 | ~1931 |
| John Donnelly | Head | — | 48 | ~1892 |
| Joseph Donnelly | Son | — | 12 | ~1928 |
| Thomas Donnelly | Son | — | 17 | ~1923 |
| Robert Donnelly | Son | — | 7 | ~1933 |
| John Donnelly | Son | — | 18 | ~1922 |
| James Donnelly | Son | — | 19 | ~1921 |
| William Donnelly | Son | — | 11 | ~1929 |
| Winnifred Donnelly | Spouse | — | 47 | ~1893 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 8
Suffolk, Massachusetts · implied b. ~1922 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Donnelly |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Irish Free State |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 18
Suffolk-County, Massachusetts · implied b. ~1922 — 10 household members
| Surname | Donnelly |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Laborer |
| Industry | Forestry |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 180 |
| Highest Grade | H-2 |
| 1935 Residence | Massachusetts |
| 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 John Donnelly across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Donnelly
Son · 1940 · age 18 · b. ~1922 · Massachusetts
★ You are viewing this record
Sibling
Mary Donnelly
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Donnelly
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Donnelly
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Donnelly
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Donnelly
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Donnelly
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Donnelly
Sibling · 1940 · age 19
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
1940 US Federal Census — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01668-00052)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Michael J Murphy | 52 | Head | Inspector | Massachusetts |
| 2 | Gertrude Murphy | 44 | Wife | — | Massachusetts |
| 3 | Joseph W Murphy | 18 | Son | New Worker | Massachusetts |
| 4 | Thomas P Murphy | 16 | Son | — | Massachusetts |
| 5 | Helen M Murphy | 12 | Daughter | — | Massachusetts |
| 6 | William J Murphy | 6 | Son | — | Massachusetts |
| 7 | John J Mawn | 40 | Head | Truck Driver | Massachusetts |
| 8 | Dorothy Mawn | 40 | Wife | — | Massachusetts |
| 9 | John J Jr Mawn | 17 | Son | — | Massachusetts |
| 10 | Dorothy Mawn | 14 | Daughter | — | Massachusetts |
| 11 | Mary L Mawn | 8 | Daughter | — | Massachusetts |
| 12 | John Q Donnelly | 48 | Head | Laborer | Massachusetts |
| 13 | Winnifred Donnelly | 47 | Wife | — | Irish Free State |
| 14 | James Donnelly | 19 | Son | Laborer | Massachusetts |
| 15 | John Donnelly THIS PERSON | 18 | Son | Laborer | Massachusetts |
| 16 | Thomas Donnelly | 17 | Son | — | Massachusetts |
| 17 | Catherine Donnelly | 14 | Daughter | — | Massachusetts |
| 18 | Joseph Donnelly | 12 | Son | — | Massachusetts |
| 19 | William Donnelly | 11 | Son | — | Massachusetts |
| 20 | Mary Donnelly | 9 | Daughter | — | Massachusetts |
| 21 | Robert Donnelly | 7 | Son | — | Massachusetts |
| 22 | Carl H Rumpf | 27 | Head | Cabinet Maker | Germany |
| 23 | Ethel Rumpf | 25 | Wife | — | Massachusetts |
| 24 | Louise Rumpf | 6 | Daughter | — | Massachusetts |
| 25 | Carol Ann Rumpf | 3 | Daughter | — | Massachusetts |
| 26 | Chester Dixon | 31 | Head | Janitor | Canada-English |
| 27 | Myrtle Dixon | 34 | Wife | — | Canada-English |
| 28 | Beverly Dixon | 9 | Daughter | — | Massachusetts |
| 29 | Charles Darkes | 67 | Head | — | England |
| 30 | Charles R Darkes | 33 | Son | Bricklayer | Massachusetts |
| 31 | Mary Whalen | 42 | Head | — | Massachusetts |
| 32 | John Whalen | 46 | Brother | School Teacher | Massachusetts |
| 33 | Helen Sister Whalen | 37 | Sister | Maid | Massachusetts |
| 34 | John Travers | 31 | Head | Waiter | Irish Free State |
| 35 | Ellen Travers | 30 | Wife | — | Irish Free State |
| 36 | Marguerite Travers | 3 | Daughter | — | Massachusetts |
| 37 | Elizabeth Travers | 2 | Daughter | — | Massachusetts |
| 38 | John J Lyons | 61 | Head | Counterman | Irish Free State |
| 39 | Julia V Lyons | 55 | Wife | — | Irish Free State |
| 40 | Margaret Cusick | 67 | Head | — | Irish Free State |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)